Severe Storms

WW 0646 Status Updates
STATUS REPORT ON WW 646 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NW ITR TO 40 SW IML TO 15 SE IML TO 20 W LBF TO 25 N LBF TO 30 S ANW TO 5 N ANW TO 40 ENE VTN. ..JEWELL..09/12/19 ATTN...WFO...BOU...GLD...LBF...CYS...GID... STATUS REPORT FOR WS 646 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC009-015-017-041-047-057-063-071-073-085-087-089-103-111-113- 115-145-149-171-183-120440- NE . NEBRASKA COUNTIES INCLUDED ARE BLAINE BOYD BROWN CUSTER DAWSON DUNDY FRONTIER GARFIELD GOSPER HAYES HITCHCOCK HOLT KEYA PAHA LINCOLN LOGAN LOUP RED WILLOW ROCK THOMAS WHEELER THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. Read more

WW 646 SEVERE TSTM CO KS NE WY 112030Z - 120400Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 646 NWS Storm Prediction Center Norman OK 230 PM MDT Wed Sep 11 2019 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northeast Colorado Northwest Kansas Western and Central Nebraska Southeast Wyoming * Effective this Wednesday afternoon and evening from 230 PM until 1000 PM MDT. * Primary threats include... Widespread large hail and isolated very large hail events to 3 inches in diameter likely Scattered damaging wind gusts to 70 mph likely A tornado or two possible SUMMARY...Thunderstorms are expected to rapidly develop this afternoon and overspread much of the watch area this afternoon and early evening. Supercells capable of large, damaging hail are the main concern. However, an isolated tornado or two cannot be ruled out. The severe thunderstorm watch area is approximately along and 95 statute miles north and south of a line from 25 miles east of North Platte NE to 30 miles north of Cheyenne WY. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU6). 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 645... AVIATION...A few severe thunderstorms with hail surface and aloft to 3 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 27030. ...Hart Read more

WW 0646 Status Updates
STATUS REPORT ON WW 646 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 45 ENE DEN TO 45 E FCL TO 50 NW AKO TO 15 SW SNY TO 15 ENE SNY TO 35 ENE AIA TO 65 ENE CDR. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1962 ..JEWELL..09/12/19 ATTN...WFO...BOU...GLD...LBF...CYS...GID... STATUS REPORT FOR WS 646 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-095-115-121-125-120240- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN PHILLIPS SEDGWICK WASHINGTON YUMA KSC023-153-120240- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE RAWLINS NEC005-009-015-017-029-031-033-041-047-049-057-063-069-071-073- 075-085-087-089-091-101-103-111-113-115-117-135-145-149-161-171- 183-120240- NE Read more

WW 0647 Status Updates
STATUS REPORT ON WW 647 THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA. ..JEWELL..09/12/19 ATTN...WFO...OAX...FSD...ABR...UNR... STATUS REPORT FOR WS 647 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS NEC003-027-043-051-107-139-120240- NE . NEBRASKA COUNTIES INCLUDED ARE ANTELOPE CEDAR DAKOTA DIXON KNOX PIERCE SDC003-005-009-011-015-017-023-027-035-043-053-059-061-065-067- 069-073-075-077-079-083-085-087-095-097-099-101-111-117-121-123- 125-127-135-120240- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE AURORA BEADLE BON HOMME BROOKINGS BRULE BUFFALO CHARLES MIX CLAY DAVISON DOUGLAS GREGORY HAND HANSON HUGHES HUTCHINSON HYDE JERAULD JONES KINGSBURY LAKE LINCOLN LYMAN MCCOOK MELLETTE MINER MINNEHAHA MOODY SANBORN STANLEY TODD Read more

MD 1962 CONCERNING SEVERE THUNDERSTORM WATCH 646... FOR MUCH OF CENTRAL NEBRASKA
Mesoscale Discussion 1962 NWS Storm Prediction Center Norman OK 0814 PM CDT Wed Sep 11 2019 Areas affected...much of central Nebraska Concerning...Severe Thunderstorm Watch 646... Valid 120114Z - 120315Z The severe weather threat for Severe Thunderstorm Watch 646 continues. SUMMARY...The threat for damaging hail and wind will continue across much of central Nebraska this evening. DISCUSSION...Numerous strong to severe storms were ongoing as of 01Z from northeast CO into central NE, along multiple boundaries. The 00Z soundings from DNR and LBF both showed substantial instability, with impressive winds aloft for this time of year. Although winds aloft will continue to increase as the upper trough approaches, there are hodograph weaknesses related to veering then backing winds with height. As a result, storm modes have been mixed across the region. Regardless, cold temperatures aloft and favorable large-scale lift will continue to support severe storms with damaging hail. Some of the larger storms may also produce damaging winds as downdrafts will be cold and hail-laden. An increasing low-level jet may allow leading cells over central NE (near the stationary front) to grow upscale a bit, possibly with a damaging wind threat. A brief tornado cannot be ruled out anywhere east of the cold front as low-level shear remains sufficient, with mixed storm mode being the main mitigating factor. ..Jewell.. 09/12/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FSD...OAX...GID...LBF...UNR...GLD...BOU...CYS... LAT...LON 40180314 40260412 40510401 41340328 41580254 42140194 43010136 42999849 42869818 42259821 41779835 40349975 40180314 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Wed Sep 11 2019 Valid 120100Z - 121200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE CENTRAL HIGH PLAINS... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL PLAINS INTO PORTIONS OF SOUTHERN LOWER MI... ...SUMMARY... Severe thunderstorms will continue tonight across the central Plains while isolated strong-severe storms will linger from southern Wisconsin to the upper Ohio Valley. ...01z Update... Large-scale height falls are spreading across the central/northern Plains ahead of a strong short-wave trough progressing across WY/UT/CO. Substantial thunderstorm activity has evolved ahead of this feature, primarily along a corridor from northeast CO into central NE, along/north of a synoptic front draped across this region. As large-scale forcing spreads east tonight, upward-evolving convection is expected across NE as LLJ increases in response to approaching short wave. Currently, several supercell structures are noted across northeast CO into central NE, but storm mergers and forcing should contribute to an expanding complex of storms over the next few hours. Until an MCS emerges, some tornado threat, along with large hail, can be expected with supercell structures. Damaging winds may become more common if bowing structures ultimately develop along leading edge of an intensifying cold pool. Robust convection is expected to spread/develop downstream over the next few hours, possibly reaching southwestern MN as an elevated severe threat. Downstream across the Great Lakes/OH Valley, trailing influence of ejecting short-wave trough lingers across southern lower MI where a loosely organized MCS has evolved. This activity is beginning to turn more southeast and should approach western Lake Erie over the next few hours. Latest hail algorithm suggests the strongest updrafts are producing hail generally less than 1" and primary severe threat the remainder of this evening will be locally damaging winds. ..Darrow.. 09/12/2019 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Wed Sep 11 2019 Valid 120100Z - 121200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE CENTRAL HIGH PLAINS... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL PLAINS INTO PORTIONS OF SOUTHERN LOWER MI... ...SUMMARY... Severe thunderstorms will continue tonight across the central Plains while isolated strong-severe storms will linger from southern Wisconsin to the upper Ohio Valley. ...01z Update... Large-scale height falls are spreading across the central/northern Plains ahead of a strong short-wave trough progressing across WY/UT/CO. Substantial thunderstorm activity has evolved ahead of this feature, primarily along a corridor from northeast CO into central NE, along/north of a synoptic front draped across this region. As large-scale forcing spreads east tonight, upward-evolving convection is expected across NE as LLJ increases in response to approaching short wave. Currently, several supercell structures are noted across northeast CO into central NE, but storm mergers and forcing should contribute to an expanding complex of storms over the next few hours. Until an MCS emerges, some tornado threat, along with large hail, can be expected with supercell structures. Damaging winds may become more common if bowing structures ultimately develop along leading edge of an intensifying cold pool. Robust convection is expected to spread/develop downstream over the next few hours, possibly reaching southwestern MN as an elevated severe threat. Downstream across the Great Lakes/OH Valley, trailing influence of ejecting short-wave trough lingers across southern lower MI where a loosely organized MCS has evolved. This activity is beginning to turn more southeast and should approach western Lake Erie over the next few hours. Latest hail algorithm suggests the strongest updrafts are producing hail generally less than 1" and primary severe threat the remainder of this evening will be locally damaging winds. ..Darrow.. 09/12/2019 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Wed Sep 11 2019 Valid 120100Z - 121200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE CENTRAL HIGH PLAINS... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL PLAINS INTO PORTIONS OF SOUTHERN LOWER MI... ...SUMMARY... Severe thunderstorms will continue tonight across the central Plains while isolated strong-severe storms will linger from southern Wisconsin to the upper Ohio Valley. ...01z Update... Large-scale height falls are spreading across the central/northern Plains ahead of a strong short-wave trough progressing across WY/UT/CO. Substantial thunderstorm activity has evolved ahead of this feature, primarily along a corridor from northeast CO into central NE, along/north of a synoptic front draped across this region. As large-scale forcing spreads east tonight, upward-evolving convection is expected across NE as LLJ increases in response to approaching short wave. Currently, several supercell structures are noted across northeast CO into central NE, but storm mergers and forcing should contribute to an expanding complex of storms over the next few hours. Until an MCS emerges, some tornado threat, along with large hail, can be expected with supercell structures. Damaging winds may become more common if bowing structures ultimately develop along leading edge of an intensifying cold pool. Robust convection is expected to spread/develop downstream over the next few hours, possibly reaching southwestern MN as an elevated severe threat. Downstream across the Great Lakes/OH Valley, trailing influence of ejecting short-wave trough lingers across southern lower MI where a loosely organized MCS has evolved. This activity is beginning to turn more southeast and should approach western Lake Erie over the next few hours. Latest hail algorithm suggests the strongest updrafts are producing hail generally less than 1" and primary severe threat the remainder of this evening will be locally damaging winds. ..Darrow.. 09/12/2019 Read more

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0800 PM CDT Wed Sep 11 2019 Valid 120100Z - 121200Z ...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE CENTRAL HIGH PLAINS... ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FROM THE CENTRAL PLAINS INTO PORTIONS OF SOUTHERN LOWER MI... ...SUMMARY... Severe thunderstorms will continue tonight across the central Plains while isolated strong-severe storms will linger from southern Wisconsin to the upper Ohio Valley. ...01z Update... Large-scale height falls are spreading across the central/northern Plains ahead of a strong short-wave trough progressing across WY/UT/CO. Substantial thunderstorm activity has evolved ahead of this feature, primarily along a corridor from northeast CO into central NE, along/north of a synoptic front draped across this region. As large-scale forcing spreads east tonight, upward-evolving convection is expected across NE as LLJ increases in response to approaching short wave. Currently, several supercell structures are noted across northeast CO into central NE, but storm mergers and forcing should contribute to an expanding complex of storms over the next few hours. Until an MCS emerges, some tornado threat, along with large hail, can be expected with supercell structures. Damaging winds may become more common if bowing structures ultimately develop along leading edge of an intensifying cold pool. Robust convection is expected to spread/develop downstream over the next few hours, possibly reaching southwestern MN as an elevated severe threat. Downstream across the Great Lakes/OH Valley, trailing influence of ejecting short-wave trough lingers across southern lower MI where a loosely organized MCS has evolved. This activity is beginning to turn more southeast and should approach western Lake Erie over the next few hours. Latest hail algorithm suggests the strongest updrafts are producing hail generally less than 1" and primary severe threat the remainder of this evening will be locally damaging winds. ..Darrow.. 09/12/2019 Read more

WW 0645 Status Updates
STATUS REPORT ON WW 645 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSW RAC TO 15 ENE RAC TO 25 NW LAN TO 45 NE MTC. ..SQUITIERI..09/12/19 ATTN...WFO...GRR...DTX...MKX... STATUS REPORT FOR WS 645 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC005-015-025-037-045-049-065-067-075-077-091-093-099-115-125- 147-155-159-161-163-120140- MI . MICHIGAN COUNTIES INCLUDED ARE ALLEGAN BARRY CALHOUN CLINTON EATON GENESEE INGHAM IONIA JACKSON KALAMAZOO LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SHIAWASSEE VAN BUREN WASHTENAW WAYNE LCZ422-423-460-LEZ444-LMZ675-844-845-876-878-120140- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER Read more

WW 0645 Status Updates
STATUS REPORT ON WW 645 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSW RAC TO 15 ENE RAC TO 25 NW LAN TO 45 NE MTC. ..SQUITIERI..09/12/19 ATTN...WFO...GRR...DTX...MKX... STATUS REPORT FOR WS 645 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC005-015-025-037-045-049-065-067-075-077-091-093-099-115-125- 147-155-159-161-163-120140- MI . MICHIGAN COUNTIES INCLUDED ARE ALLEGAN BARRY CALHOUN CLINTON EATON GENESEE INGHAM IONIA JACKSON KALAMAZOO LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SHIAWASSEE VAN BUREN WASHTENAW WAYNE LCZ422-423-460-LEZ444-LMZ675-844-845-876-878-120140- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER Read more

WW 0645 Status Updates
STATUS REPORT ON WW 645 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SSW RAC TO 15 ENE RAC TO 25 NW LAN TO 45 NE MTC. ..SQUITIERI..09/12/19 ATTN...WFO...GRR...DTX...MKX... STATUS REPORT FOR WS 645 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC005-015-025-037-045-049-065-067-075-077-091-093-099-115-125- 147-155-159-161-163-120140- MI . MICHIGAN COUNTIES INCLUDED ARE ALLEGAN BARRY CALHOUN CLINTON EATON GENESEE INGHAM IONIA JACKSON KALAMAZOO LENAWEE LIVINGSTON MACOMB MONROE OAKLAND ST. CLAIR SHIAWASSEE VAN BUREN WASHTENAW WAYNE LCZ422-423-460-LEZ444-LMZ675-844-845-876-878-120140- CW . ADJACENT COASTAL WATERS INCLUDED ARE ST. CLAIR RIVER DETROIT RIVER Read more

WW 645 SEVERE TSTM MI WI LE LH LM 111830Z - 120300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 645 NWS Storm Prediction Center Norman OK 230 PM EDT Wed Sep 11 2019 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Southern Lower Michigan Southern Wisconsin Lake Erie Lake Huron Lake Michigan * Effective this Wednesday afternoon and evening from 230 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms are expected to intensify across southern Wisconsin and the southern half of Lower Michigan this afternoon, with multiple rounds of strong to severe storms. Damaging winds will be the main threat in the most intense cells. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 25 miles east of Mount Clemens MI to 10 miles north of Lonerock WI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). 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 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28025. ...Hart Read more

WW 0646 Status Updates
STATUS REPORT ON WW 646 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SW CYS TO 30 ESE CYS TO 45 W SNY TO 20 NW SNY TO 10 SSE AIA TO 50 ENE CDR. ..JEWELL..09/12/19 ATTN...WFO...BOU...GLD...LBF...CYS...GID... STATUS REPORT FOR WS 646 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-095-115-121-123-125-120140- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN PHILLIPS SEDGWICK WASHINGTON WELD YUMA KSC023-153-120140- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE RAWLINS NEC005-009-015-017-029-031-033-041-047-049-057-063-069-071-073- 075-085-087-089-091-101-103-105-111-113-115-117-135-145-149-161- 171-183-120140- NE . NEBRASKA COUNTIES INCLUDED ARE Read more

MD 1961 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR MUCH OF SOUTHERN SOUTH DAKOTA
Mesoscale Discussion 1961 NWS Storm Prediction Center Norman OK 0543 PM CDT Wed Sep 11 2019 Areas affected...much of southern South Dakota Concerning...Severe potential...Watch possible Valid 112243Z - 120045Z Probability of Watch Issuance...60 percent SUMMARY...A few storms may move north of the Nebraska border over the next several hours, producing large hail. Additional severe storms may develop later this evening over South Dakota with damaging winds as well. DISCUSSION...Storms are currently developing along a cold front from southwest SD into western NE, and also along and north of the east-west oriented stationary front. As the upper trough continues east, low-level warm advection will cause the stationary front to become a warm front, with a gradual influx of warm/moist air into southern SD. Initially, elevated storms capable of hail are expected over northern NE and far southern SD. Later in the evening, strong warm air advection at 850 mb will develop, resulting in increasing boundary layer theta-e. After 03Z, parts of southeast SD may warm enough to support surface-based storms with a threat of damaging winds. ..Jewell/Goss.. 09/11/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FSD...OAX...ABR...LBF...UNR... LAT...LON 42980242 43790017 44159846 44299730 44109683 43539644 42999640 42569713 42309867 42159984 42290143 42440212 42550234 42740250 42980242 Read more

WW 0645 Status Updates
STATUS REPORT ON WW 645 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 SW LNR TO 15 SW MKG TO 40 NE MKG TO 55 ESE BAX. ..SQUITIERI..09/11/19 ATTN...WFO...GRR...DTX...MKX... STATUS REPORT FOR WS 645 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC005-015-025-037-045-049-057-065-067-075-077-081-087-091-093- 099-115-117-125-139-145-147-155-159-161-163-120040- MI . MICHIGAN COUNTIES INCLUDED ARE ALLEGAN BARRY CALHOUN CLINTON EATON GENESEE GRATIOT INGHAM IONIA JACKSON KALAMAZOO KENT LAPEER LENAWEE LIVINGSTON MACOMB MONROE MONTCALM OAKLAND OTTAWA SAGINAW ST. CLAIR SHIAWASSEE VAN BUREN WASHTENAW WAYNE WIC025-045-049-055-059-065-079-101-105-127-133-120040- WI . WISCONSIN COUNTIES INCLUDED ARE DANE GREEN IOWA JEFFERSON KENOSHA LAFAYETTE MILWAUKEE RACINE ROCK Read more

MD 1961 CONCERNING SEVERE POTENTIAL...WATCH POSSIBLE FOR MUCH OF SOUTHERN SOUTH DAKOTA
Mesoscale Discussion 1961 NWS Storm Prediction Center Norman OK 0543 PM CDT Wed Sep 11 2019 Areas affected...much of southern South Dakota Concerning...Severe potential...Watch possible Valid 112243Z - 120045Z Probability of Watch Issuance...60 percent SUMMARY...A few storms may move north of the Nebraska border over the next several hours, producing large hail. Additional severe storms may develop later this evening over South Dakota with damaging winds as well. DISCUSSION...Storms are currently developing along a cold front from southwest SD into western NE, and also along and north of the east-west oriented stationary front. As the upper trough continues east, low-level warm advection will cause the stationary front to become a warm front, with a gradual influx of warm/moist air into southern SD. Initially, elevated storms capable of hail are expected over northern NE and far southern SD. Later in the evening, strong warm air advection at 850 mb will develop, resulting in increasing boundary layer theta-e. After 03Z, parts of southeast SD may warm enough to support surface-based storms with a threat of damaging winds. ..Jewell/Goss.. 09/11/2019 ...Please see www.spc.noaa.gov for graphic product... ATTN...WFO...FSD...OAX...ABR...LBF...UNR... LAT...LON 42980242 43790017 44159846 44299730 44109683 43539644 42999640 42569713 42309867 42159984 42290143 42440212 42550234 42740250 42980242 Read more

WW 0645 Status Updates
STATUS REPORT ON WW 645 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 W LNR TO 30 NNE MKE TO 20 S MBL. ..SQUITIERI..09/11/19 ATTN...WFO...GRR...DTX...MKX... STATUS REPORT FOR WS 645 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS MIC005-015-017-025-035-037-045-049-057-063-065-067-073-075-077- 081-085-087-091-093-099-105-107-111-115-117-121-123-125-127-133- 139-145-147-151-155-157-159-161-163-112340- MI . MICHIGAN COUNTIES INCLUDED ARE ALLEGAN BARRY BAY CALHOUN CLARE CLINTON EATON GENESEE GRATIOT HURON INGHAM IONIA ISABELLA JACKSON KALAMAZOO KENT LAKE LAPEER LENAWEE LIVINGSTON MACOMB MASON MECOSTA MIDLAND MONROE MONTCALM MUSKEGON NEWAYGO OAKLAND OCEANA OSCEOLA OTTAWA SAGINAW ST. CLAIR SANILAC SHIAWASSEE TUSCOLA VAN BUREN WASHTENAW WAYNE WIC025-045-049-055-059-065-079-101-105-127-133-112340- Read more

WW 645 SEVERE TSTM MI WI LE LH LM 111830Z - 120300Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 645 NWS Storm Prediction Center Norman OK 230 PM EDT Wed Sep 11 2019 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Southern Lower Michigan Southern Wisconsin Lake Erie Lake Huron Lake Michigan * Effective this Wednesday afternoon and evening from 230 PM until 1100 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms are expected to intensify across southern Wisconsin and the southern half of Lower Michigan this afternoon, with multiple rounds of strong to severe storms. Damaging winds will be the main threat in the most intense cells. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 25 miles east of Mount Clemens MI to 10 miles north of Lonerock WI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). 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 1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 28025. ...Hart Read more

WW 0646 Status Updates
STATUS REPORT ON WW 646 SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 NW FCL TO 5 ENE CYS TO 20 S TOR TO 25 N BFF TO 20 NNW CDR. ..JEWELL..09/11/19 ATTN...WFO...BOU...GLD...LBF...CYS...GID... STATUS REPORT FOR WS 646 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS COC075-087-095-115-121-123-125-112340- CO . COLORADO COUNTIES INCLUDED ARE LOGAN MORGAN PHILLIPS SEDGWICK WASHINGTON WELD YUMA KSC023-153-112340- KS . KANSAS COUNTIES INCLUDED ARE CHEYENNE RAWLINS NEC005-007-009-013-017-029-031-033-041-045-047-049-057-063-069- 073-075-085-087-091-101-105-111-113-115-117-123-135-145-157-161- 165-171-112340- NE . NEBRASKA COUNTIES INCLUDED ARE Read more