Severe Storms

MD 0839 CONCERNING SEVERE THUNDERSTORM WATCH 260... FOR MUCH OF KANSAS INTO NORTHWESTERN OKLAHOMA
Mesoscale Discussion 0839 NWS Storm Prediction Center Norman OK 0517 PM CDT Sun May 19 2024 Areas affected...much of Kansas into northwestern Oklahoma Concerning...Severe Thunderstorm Watch 260... Valid 192217Z - 200015Z The severe weather threat for Severe Thunderstorm Watch 260 continues. SUMMARY...A couple of clusters of thunderstorms appear likely to continue to gradually evolve and organize during the next couple of hours, with severe wind gusts occasionally exceeding 75 mph becoming the most prominent severe hazard by 7-8 PM CDT. DISCUSSION...Embedded within 30-40 kt southwesterly deep-layer mean flow, an ongoing intense supercell has been rightward (eastward) propagating toward the Salina KS vicinity. This motion is roughly coincident with a west-southwest to east-northeast oriented warm frontal zone, extending along/north of the Interstate 70 corridor into northeastern Kansas. Given enhanced forcing for ascent associated with low-level convergence and warm advection along this boundary, and fairly sizable boundary-layer temperature/dew point spreads to the south of the front, further upscale growth and evolution into a more prominent bowing structure with strong damaging surface gusts becoming the primary severe hazards seems probable through 23-01Z. At the same time, as a low-amplitude short wave trough continues to gradually emerge from the southern Rockies, intensifying storms along the dryline north of Garden City KS into the Clinton-Sherman OK vicinity may continue to increase along consolidating eastward propagating outflows, aided by inflow of seasonably moist air characterized by large CAPE to around 3000 J/kg. In the presence of seasonably moderate to strong shear, this activity seems likely to gradually organize. The evolution of one or two increasingly prominent lower/mid-tropospheric mesoscale vortices appears possible, with the quasi-stationary front north of Dodge City into the Russell/Salina vicinities one potential focus for strong, damaging wind gusts. ..Kerr.. 05/19/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...EAX...TOP...ICT...OUN...GID...DDC... LAT...LON 39669764 39879551 38509541 37709738 36459817 36049924 36329991 37309965 38230020 38669959 39149846 39669764 Read more

MD 0838 CONCERNING SEVERE THUNDERSTORM WATCH 258... FOR SOUTHEAST FLORIDA
Mesoscale Discussion 0838 NWS Storm Prediction Center Norman OK 0453 PM CDT Sun May 19 2024 Areas affected...Southeast Florida Concerning...Severe Thunderstorm Watch 258... Valid 192153Z - 200000Z The severe weather threat for Severe Thunderstorm Watch 258 continues. SUMMARY...The threat for large hail and damaging winds continues across parts of the southeast Florida coast. DISCUSSION...Regional radar imagery and surface observations continue to show deep convection developing along and behind a southward-surging outflow boundary along the southeast FL coast. While most storms have struggled to intensify due to the undercutting nature of the boundary, a few deeper cells have managed to mature within an otherwise favorable supercell environment. A sea-breeze boundary remains evident along the southeastern FL coast ahead of the outflow boundary, and while deeper convective initiation has occurred within the past hour, strengthening low-level westerly winds has shifted the boundary closer to the coast, resulting in quick storm propagation offshore. The general expectation over the next 1-2 hours is for a continuation of scattered thunderstorms along the southeast FL coast with a few strong to severe cells capable of large hail and damaging winds. This threat will gradually abate through the evening hours amid the onset of nocturnal cooling and a continued southward surge of the undercutting outflow boundary. ..Moore.. 05/19/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...MFL... LAT...LON 26888070 26938060 26938008 26848003 26588002 26418005 26238008 26098010 25938010 25768011 25688014 25648024 25628031 25708045 25798057 25938066 26068073 26198078 26328083 26538085 26668083 26788078 26888070 Read more

WW 0260 Status Updates
STATUS REPORT ON WW 260 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SE BGD TO 30 SSE LBL TO 20 WNW LBL TO 40 NNE EHA TO 25 E LAA. ..MOORE..05/19/24 ATTN...WFO...DDC...ICT...TOP...GLD...GID...OUN...AMA... STATUS REPORT FOR WS 260 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC007-009-015-017-025-027-029-033-041-047-051-053-055-057-061- 063-065-067-069-071-075-077-079-081-083-093-095-097-101-105-113- 115-119-123-127-135-141-143-145-151-155-159-161-163-165-167-169- 171-173-175-185-191-195-203-200040- KS . KANSAS COUNTIES INCLUDED ARE BARBER BARTON BUTLER CHASE CLARK CLAY CLOUD COMANCHE DICKINSON EDWARDS ELLIS ELLSWORTH FINNEY FORD GEARY GOVE GRAHAM GRANT GRAY GREELEY HAMILTON HARPER HARVEY HASKELL HODGEMAN KEARNY KINGMAN KIOWA LANE LINCOLN MCPHERSON MARION MEADE MITCHELL MORRIS NESS OSBORNE OTTAWA PAWNEE PRATT RENO RICE RILEY ROOKS RUSH RUSSELL SALINE SCOTT SEDGWICK SEWARD STAFFORD Read more

WW 260 SEVERE TSTM KS OK TX 191935Z - 200300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 260 NWS Storm Prediction Center Norman OK 235 PM CDT Sun May 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western and Central Kansas Northwestern Oklahoma Northeastern Texas Panhandle * Effective this Sunday afternoon and evening from 235 PM until 1000 PM CDT. ...THIS IS A PARTICULARLY DANGEROUS SITUATION... * Primary threats include... Widespread damaging winds expected with scattered significant gusts to 90 mph likely Widespread large hail expected with scattered very large hail events to 4 inches in diameter likely A few tornadoes possible SUMMARY...Numerous severe thunderstorms are expected to develop and track rapidly eastward across the watch area through the afternoon evening. Supercells capable of giant hail, damaging winds, and isolated tornadoes will be the main threat early. Storms will organize into multiple fast-moving bowing lines through the evening with a risk of widespread damaging winds. The severe thunderstorm watch area is approximately along and 135 statute miles east and west of a line from 55 miles southwest of Alva OK to 45 miles northwest of Russell KS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 258...WW 259... AVIATION...A few severe thunderstorms with hail surface and aloft to 4 inches. Extreme turbulence and surface wind gusts to 80 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24035. ...Hart Read more

WW 0259 Status Updates
STATUS REPORT ON WW 259 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 WNW ITR TO 30 ENE AKO TO 20 WNW IML TO 25 SSE LBF TO 35 SSW ANW TO 35 W VTN TO 40 ENE CDR TO 35 SE RAP TO 10 NNE Y22. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0841 ..MOORE..05/19/24 ATTN...WFO...BOU...LBF...CYS...UNR...ABR... STATUS REPORT FOR WS 259 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC029-063-085-200040- NE . NEBRASKA COUNTIES INCLUDED ARE CHASE FRONTIER HAYES SDC007-021-031-041-055-065-071-075-085-095-107-117-119-121-123- 129-137-200040- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT CAMPBELL CORSON DEWEY HAAKON HUGHES JACKSON JONES LYMAN MELLETTE POTTER STANLEY SULLY TODD TRIPP WALWORTH ZIEBACH Read more

WW 259 SEVERE TSTM CO NE SD 191855Z - 200200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 259 NWS Storm Prediction Center Norman OK 1255 PM MDT Sun May 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Western Nebraska Western and Central South Dakota * Effective this Sunday afternoon and evening from 1255 PM until 800 PM MDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Thunderstorms are forming over parts of western South Dakota and Nebraska. These storms will spread eastward through the afternoon and early evening, posing a risk of locally damaging winds gusts and hail. The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 20 miles northwest of Mobridge SD to 40 miles southeast of Sidney NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU9). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 258... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 25030. ...Hart Read more

MD 0837 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR SOUTH-CENTRAL TO SOUTHEAST IOWA
Mesoscale Discussion 0837 NWS Storm Prediction Center Norman OK 0432 PM CDT Sun May 19 2024 Areas affected...South-central to southeast Iowa Concerning...Severe potential...Watch unlikely Valid 192132Z - 192330Z Probability of Watch Issuance...5 percent SUMMARY...Elevated thunderstorms across south-central to southeast Iowa may pose a large hail and severe wind threat over the next couple of hours. This threat should remain sufficiently isolated to preclude watch issuance. DISCUSSION...Elevated convection across central IA has shown periodic signs of intensification to near severe levels based on IR cloud top temperatures and MRMS vertically integrated ICE products with a measured 61 mph gust noted at KPEA. This activity appears to largely be driven by a combination of weak ascent atop a diffuse stationary front and propagation along a buoyancy gradient draped from south-central to southeast IA. This boundary/gradient appears to be gradually spreading north/northeast over the past couple of hours, which should support storm propagation into southeast to perhaps eastern IA by early evening. Along with sporadic severe winds, large hail - most likely between 0.75 to 1.25 inches - may be a threat. It remains unclear how much additional convection will develop and become sustained within the frontal zone based on trends of trailing convection across central IA, but the general expectation is for a limited coverage of intense/severe storms. ..Moore/Smith.. 05/19/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...DVN...DMX... LAT...LON 41109272 41149295 41299308 41609312 41769299 42359099 42139067 41869051 41609058 41389065 41259084 41149109 41109272 Read more

WW 0262 Status Updates
STATUS FOR WATCH 0262 HAS NOT BEEN ISSUED YET Read more

WW 262 SEVERE TSTM IA KS MO NE 192320Z - 200700Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 262 NWS Storm Prediction Center Norman OK 620 PM CDT Sun May 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southern Iowa Eastern Kansas Western Missouri Southeast Nebraska * Effective this Sunday night and Monday morning from 620 PM until 200 AM CDT. * Primary threats include... Widespread damaging winds and isolated significant gusts to 85 mph likely Scattered large hail and isolated very large hail events to 2 inches in diameter possible A tornado or two possible SUMMARY...Several severe thunderstorm clusters are forecast to develop and move eastward into the Watch area this evening into the overnight. Severe gusts ranging between 60-85 mph are possible with the more intense thunderstorm cores and bowing segments. Large hail may accompany some of the stronger thunderstorms mainly this evening. The severe thunderstorm watch area is approximately along and 75 statute miles east and west of a line from 35 miles west northwest of Lamoni IA to 55 miles southwest of Chanute KS. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU2). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 259...WW 260...WW 261... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 75 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27035. ...Smith Read more

WW 261 SEVERE TSTM CO KS NE 192135Z - 200200Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 261 NWS Storm Prediction Center Norman OK 435 PM CDT Sun May 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Northwest Kansas Southwest Nebraska * Effective this Sunday afternoon and evening from 435 PM until 900 PM CDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Scattered damaging wind gusts to 70 mph possible SUMMARY...Isolated to scattered thunderstorms will likely develop through the remainder of the afternoon and early evening. The stronger storms will be capable of severe gusts and large hail. A tornado cannot be ruled out with any cyclonic supercell. The severe thunderstorm watch area is approximately along and 50 statute miles north and south of a line from 40 miles north northwest of Burlington CO to 65 miles east of Mccook NE. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 258...WW 259...WW 260... AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ...Smith Read more

MD 0836 CONCERNING SEVERE THUNDERSTORM WATCH 260... FOR SOUTHWEST INTO CENTRAL KANSAS...NORTHEAST TEXAS PANHANDLE...NORTHWEST OKLAHOMA
Mesoscale Discussion 0836 NWS Storm Prediction Center Norman OK 0351 PM CDT Sun May 19 2024 Areas affected...Southwest into Central Kansas...northeast Texas Panhandle...northwest Oklahoma Concerning...Severe Thunderstorm Watch 260... Valid 192051Z - 192245Z The severe weather threat for Severe Thunderstorm Watch 260 continues. SUMMARY...The threat for very-large hail, significant wind gusts, and tornadoes will continue into the evening. DISCUSSION...The greatest tornado risk within WW 260 exists near Russell, KS. There was a recent report of a tornado west of Russell at 2027Z. The environment downstream of this storm should remain favorable for very-large hail (severe 2+ in. reports are associated with this storm over the past 90 minutes), severe wind gusts (71 kts measured at KRSL), and tornadoes. The surface observation at Salina shows 91/60, which would suggest some reduction in low-level RH. The eastern extent of the tornado threat with this storm is the main uncertainty. Farther west, a cluster of high-based thunderstorms continues into western Kansas. This activity has the potential to become more intense/organized as it encounters low/mid 60s F dewpoints farther east. Most guidance has been insistent on this activity becoming a bowing segment with the potential for significant (75+ mph) wind gusts. Storms moving out of the Texas Panhandle into northwest Oklahoma have so far struggled to maintain intensity, most likely due to limited moisture. As with storms to the north, intensification/organization is possible as greater low-level moisture is ingested. With these storms remaining more discrete, a tornado threat is still possible, particularly as the low-level jet increases this evening. ..Wendt.. 05/19/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...TOP...ICT...OUN...GID...DDC...GLD...AMA... LAT...LON 35639976 35930068 36720193 38230200 39069985 39519820 39369673 38359647 37189749 35829882 35639976 Read more

WW 0260 Status Updates
STATUS REPORT ON WW 260 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..MOORE..05/19/24 ATTN...WFO...DDC...ICT...TOP...GLD...GID...OUN...AMA... STATUS REPORT FOR WS 260 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC007-009-015-017-025-027-029-033-041-047-051-053-055-057-061- 063-065-067-069-071-075-077-079-081-083-093-095-097-101-105-113- 115-119-123-127-129-135-141-143-145-151-155-159-161-163-165-167- 169-171-173-175-185-187-189-191-195-203-192340- KS . KANSAS COUNTIES INCLUDED ARE BARBER BARTON BUTLER CHASE CLARK CLAY CLOUD COMANCHE DICKINSON EDWARDS ELLIS ELLSWORTH FINNEY FORD GEARY GOVE GRAHAM GRANT GRAY GREELEY HAMILTON HARPER HARVEY HASKELL HODGEMAN KEARNY KINGMAN KIOWA LANE LINCOLN MCPHERSON MARION MEADE MITCHELL MORRIS MORTON NESS OSBORNE OTTAWA PAWNEE PRATT RENO RICE RILEY ROOKS RUSH RUSSELL SALINE SCOTT SEDGWICK SEWARD STAFFORD STANTON STEVENS Read more

WW 0260 Status Updates
STATUS REPORT ON WW 260 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..MOORE..05/19/24 ATTN...WFO...DDC...ICT...TOP...GLD...GID...OUN...AMA... STATUS REPORT FOR WS 260 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS KSC007-009-015-017-025-027-029-033-041-047-051-053-055-057-061- 063-065-067-069-071-075-077-079-081-083-093-095-097-101-105-113- 115-119-123-127-129-135-141-143-145-151-155-159-161-163-165-167- 169-171-173-175-185-187-189-191-195-203-192340- KS . KANSAS COUNTIES INCLUDED ARE BARBER BARTON BUTLER CHASE CLARK CLAY CLOUD COMANCHE DICKINSON EDWARDS ELLIS ELLSWORTH FINNEY FORD GEARY GOVE GRAHAM GRANT GRAY GREELEY HAMILTON HARPER HARVEY HASKELL HODGEMAN KEARNY KINGMAN KIOWA LANE LINCOLN MCPHERSON MARION MEADE MITCHELL MORRIS MORTON NESS OSBORNE OTTAWA PAWNEE PRATT RENO RICE RILEY ROOKS RUSH RUSSELL SALINE SCOTT SEDGWICK SEWARD STAFFORD STANTON STEVENS Read more

WW 0258 Status Updates
STATUS REPORT ON WW 258 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S AGR TO 55 ENE PBI. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0838 ..MOORE..05/19/24 ATTN...WFO...MFL...MLB... STATUS REPORT FOR WS 258 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS FLC011-086-099-192240- FL . FLORIDA COUNTIES INCLUDED ARE BROWARD MIAMI-DADE PALM BEACH AMZ610-630-650-651-192240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE OKEECHOBEE BISCAYNE BAY COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH FL OUT 20 NM COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF FL OUT 20 NM THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

WW 0258 Status Updates
STATUS REPORT ON WW 258 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S AGR TO 55 ENE PBI. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0838 ..MOORE..05/19/24 ATTN...WFO...MFL...MLB... STATUS REPORT FOR WS 258 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS FLC011-086-099-192240- FL . FLORIDA COUNTIES INCLUDED ARE BROWARD MIAMI-DADE PALM BEACH AMZ610-630-650-651-192240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE OKEECHOBEE BISCAYNE BAY COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH FL OUT 20 NM COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF FL OUT 20 NM THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

WW 0258 Status Updates
STATUS REPORT ON WW 258 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S AGR TO 55 ENE PBI. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0838 ..MOORE..05/19/24 ATTN...WFO...MFL...MLB... STATUS REPORT FOR WS 258 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS FLC011-086-099-192240- FL . FLORIDA COUNTIES INCLUDED ARE BROWARD MIAMI-DADE PALM BEACH AMZ610-630-650-651-192240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE OKEECHOBEE BISCAYNE BAY COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH FL OUT 20 NM COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF FL OUT 20 NM THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

WW 258 SEVERE TSTM FL CW 191655Z - 192300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 258 NWS Storm Prediction Center Norman OK 1255 PM EDT Sun May 19 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Florida Coastal Waters * Effective this Sunday afternoon and evening from 1255 PM until 700 PM EDT. * Primary threats include... Scattered large hail and isolated very large hail events to 2 inches in diameter possible Isolated damaging wind gusts to 70 mph possible SUMMARY...Thunderstorms are developing along a cold front over central Florida. Other storms will focus along the sea-breeze this afternoon. A few of the storms will pose a risk of large hail and gusty/damaging winds. The severe thunderstorm watch area is approximately along and 25 statute miles east and west of a line from 5 miles northwest of Vero Beach FL to 15 miles southeast of Miami FL. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU8). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for 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. Severe thunderstorms can and occasionally do produce tornadoes. && AVIATION...A few severe thunderstorms with hail surface and aloft to 2 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 29025. ...Hart Read more

WW 0258 Status Updates
STATUS REPORT ON WW 258 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S AGR TO 55 ENE PBI. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0838 ..MOORE..05/19/24 ATTN...WFO...MFL...MLB... STATUS REPORT FOR WS 258 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS FLC011-086-099-192240- FL . FLORIDA COUNTIES INCLUDED ARE BROWARD MIAMI-DADE PALM BEACH AMZ610-630-650-651-192240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE OKEECHOBEE BISCAYNE BAY COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH FL OUT 20 NM COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF FL OUT 20 NM THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

WW 0258 Status Updates
STATUS REPORT ON WW 258 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 S AGR TO 55 ENE PBI. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 0838 ..MOORE..05/19/24 ATTN...WFO...MFL...MLB... STATUS REPORT FOR WS 258 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS FLC011-086-099-192240- FL . FLORIDA COUNTIES INCLUDED ARE BROWARD MIAMI-DADE PALM BEACH AMZ610-630-650-651-192240- CW . ADJACENT COASTAL WATERS INCLUDED ARE LAKE OKEECHOBEE BISCAYNE BAY COASTAL WATERS FROM JUPITER INLET TO DEERFIELD BEACH FL OUT 20 NM COASTAL WATERS FROM DEERFIELD BEACH TO OCEAN REEF FL OUT 20 NM THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE Read more

MD 0835 CONCERNING SEVERE THUNDERSTORM WATCH 259... FOR WESTERN NE...SOUTHWEST SD...EXTREME NORTHEAST CO
Mesoscale Discussion 0835 NWS Storm Prediction Center Norman OK 0350 PM CDT Sun May 19 2024 Areas affected...Western NE...Southwest SD...extreme northeast CO Concerning...Severe Thunderstorm Watch 259... Valid 192050Z - 192215Z The severe weather threat for Severe Thunderstorm Watch 259 continues. SUMMARY...The threat for hail and severe gusts should increase into late afternoon. DISCUSSION...Thunderstorms are increasing in coverage and intensity across the NE Panhandle into northeast CO this afternoon, with some increase also recently noted into southwest SD and extreme west-central WY. Sufficient deep-layer shear (effective shear of 40+ kt) and steep midlevel lapse rates will continue to support a hail threat with ongoing discrete cells from northeast CO into the NE Panhandle, with some additional discrete cell development possible into southwest SD. A brief tornado also cannot be ruled out with any sustained supercell, especially over northeast CO where multiple surface boundaries are in place. With time, some clustering of storms will be possible as outflows consolidate, leading to an increase in severe-wind potential late this afternoon into early evening, especially in areas where stronger heating and deeper mixing have occurred this afternoon. ..Dean.. 05/19/2024 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...LBF...UNR...GLD...BOU...CYS... LAT...LON 40740324 43990406 44610280 44640193 44230119 43700104 41790122 41450130 41080139 40730149 40160196 39690332 40740324 Read more