Severe Storms

WW 0099 Status Updates
STATUS REPORT ON WW 99 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NNW EVV TO 20 NW IND TO 15 ENE SBN. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0367 ..WEINMAN..04/03/25 ATTN...WFO...ILX...LOT...IND...IWX... STATUS REPORT FOR WT 99 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC101-030240- IL . ILLINOIS COUNTIES INCLUDED ARE LAWRENCE INC001-003-009-011-013-017-021-023-027-033-039-049-053-055-057- 063-067-069-075-081-083-085-087-093-097-099-101-103-105-109-113- 119-133-151-153-159-169-179-183-030240- IN . INDIANA COUNTIES INCLUDED ARE ADAMS ALLEN BLACKFORD BOONE BROWN CASS CLAY CLINTON DAVIESS DE KALB ELKHART FULTON GRANT GREENE HAMILTON HENDRICKS HOWARD HUNTINGTON JAY JOHNSON KNOX KOSCIUSKO LAGRANGE LAWRENCE Read more

WW 0099 Status Updates
STATUS REPORT ON WW 99 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 NNW EVV TO 20 NW IND TO 15 ENE SBN. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0367 ..WEINMAN..04/03/25 ATTN...WFO...ILX...LOT...IND...IWX... STATUS REPORT FOR WT 99 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS ILC101-030240- IL . ILLINOIS COUNTIES INCLUDED ARE LAWRENCE INC001-003-009-011-013-017-021-023-027-033-039-049-053-055-057- 063-067-069-075-081-083-085-087-093-097-099-101-103-105-109-113- 119-133-151-153-159-169-179-183-030240- IN . INDIANA COUNTIES INCLUDED ARE ADAMS ALLEN BLACKFORD BOONE BROWN CASS CLAY CLINTON DAVIESS DE KALB ELKHART FULTON GRANT GREENE HAMILTON HENDRICKS HOWARD HUNTINGTON JAY JOHNSON KNOX KOSCIUSKO LAGRANGE LAWRENCE Read more

WW 99 TORNADO IL IN 022015Z - 030300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Tornado Watch Number 99 NWS Storm Prediction Center Norman OK 315 PM CDT Wed Apr 2 2025 The NWS Storm Prediction Center has issued a * Tornado Watch for portions of Central and Eastern Illinois Western and Central Indiana * Effective this Wednesday afternoon and evening from 315 PM until 1000 PM CDT. * Primary threats include... Several tornadoes likely with a couple intense tornadoes possible Widespread damaging winds likely with isolated significant gusts to 80 mph possible Scattered large hail events to 1.5 inches in diameter possible SUMMARY...Severe storms are expected to develop and increase initially across central/northeast Illinois late this afternoon, and steadily progress east-northeastward into eastern Illinois and much of western/central/northern Indiana by evening. The tornado watch area is approximately along and 90 statute miles north and south of a line from 30 miles west northwest of Decatur IL to 45 miles north northeast of Indianapolis IN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Tornado Watch means conditions are favorable for tornadoes and severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. && OTHER WATCH INFORMATION...CONTINUE...WW 97...WW 98... AVIATION...Tornadoes and a few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 70 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 23035. ...Guyer Read more

WW 0103 Status Updates
STATUS FOR WATCH 0103 HAS NOT BEEN ISSUED YET Read more

MD 0362 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR PARTS OF MIDDLE TENNESSEE THROUGH CENTRAL KENTUCKY
Mesoscale Discussion 0362 NWS Storm Prediction Center Norman OK 0609 PM CDT Wed Apr 02 2025 Areas affected...parts of middle Tennessee through central Kentucky Concerning...Severe potential...Watch possible Valid 022309Z - 030115Z Probability of Watch Issuance...60 percent SUMMARY...The risk for strong to severe convection, including supercells, posing a risk for damaging wind gusts and tornadoes may increase through 9-11 PM EDT. Trends are being monitored for the possibility of a watch. DISCUSSION...A clustering of discrete thunderstorm development, likely supported by forcing associated with broad low-level warm advection, and perhaps a weak perturbation within the strong southwesterly flow aloft, probably will continue developing northeastward within a slowly moistening boundary layer across the Mid South into lower Ohio Valley. This activity still appears embedded within a broadly anticyclonic low-level regime across northwestern Mississippi through western and middle Tennessee, but the Rapid Refresh suggests that surface pressure falls may lead to weak troughing across south central through east central Kentucky by 01-02Z. It appears that this will coincide with substantive further strengthening of low-level flow (50-70+ kt around 850 mb). If inhibition does not become suppressive to convection, with the onset of diurnal cooling, the risk for tornadoes and damaging wind gusts may increase through mid to late evening. ..Kerr/Hart.. 04/02/2025 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MRX...JKL...ILN...LMK...OHX...HUN...PAH...MEG... LAT...LON 36878779 38178619 38378477 37758348 36328495 35538598 34958768 36238809 36878779 MOST PROBABLE PEAK TORNADO INTENSITY...140-170 MPH MOST PROBABLE PEAK WIND GUST...65-80 MPH MOST PROBABLE PEAK HAIL SIZE...1.00-1.75 IN Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0755 PM CDT Wed Apr 02 2025 Valid 030100Z - 031200Z ...THERE IS A HIGH RISK OF SEVERE THUNDERSTORMS FROM SOUTHERN ARKANSAS INTO SOUTHERN ILLINOIS... ...SUMMARY... A tornado outbreak is ongoing across parts of the lower Mississippi Valley into the Mid-South and lower Ohio Valley. Numerous tornadoes, along with multiple EF3+ tornadoes, remain likely. Additionally, tornadoes, significant severe wind gusts, and large hail to very large hail remain possible across a broad area from north Texas northeastward to the southern Great Lakes. ...01z Update... An elongated corridor of severe thunderstorms has evolved from southern Arkansas, northeast across the Boot Heel of Missouri into northern Indiana. Numerous tornadic supercells are noted along this zone, especially across the High Risk area from southern Arkansas into southern Illinois. Multiple long-lived tornadoes have likely produced significant damage in places, and this threat will continue into the late evening/overnight hours. Intense LLJ is forecast to translate across the western Tennessee Valley into the lower Great Lakes, and this will contribute to a northeastward shift of organized convection after midnight as the primary short-wave trough ejects toward lower Michigan. Environmental parameters continue to favor strong tornadoes and damaging winds, along with large hail. Upstream across Texas, a secondary low-latitude short-wave trough will approach far West Texas late in the period. In response to this feature, LLJ is forecast to increase across the Edwards Plateau by 03/06z, and strengthening is expected as the LLJ shifts toward the I35 corridor by sunrise. Significant destabilization is expected into north-central Texas late as moisture surges north. As a result, supercells are expected to develop and spread east-northeast. ..Darrow.. 04/03/2025 Read more