Hazard Tornadoes EF2+ Tornadoes Likelihood Low Very Low Severe Wind 65 kt+ Wind Moderate Low Severe Hail 2"+ Hail Moderate Moderate

Note: The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.

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SEL9 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 339 NWS Storm Prediction Center Norman OK 605 PM MDT Tue Jul 7 2020 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western South Dakota * Effective this Tuesday night from 605 PM until Midnight 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 A tornado or two possible SUMMARY...An ongoing thunderstorm cluster in southwest South Dakota will develop northeastward, while a separate cluster in southeast Montana will move into northwest South Dakota. Both of these storm clusters will be capable of producing damaging winds and large hail. There is also some chance for embedded supercell structures capable of producing an isolated tornado. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 40 miles northeast of Buffalo SD to 35 miles west southwest of Philip SD. 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. && 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 550. Mean storm motion vector 26035. ...Thompson Click for Watch Status Reports

Hazard Tornadoes EF2+ Tornadoes Likelihood Low Very Low Severe Wind 65 kt+ Wind Moderate Low Severe Hail 2"+ Hail Moderate Moderate SEL9 URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 339 NWS Storm Prediction Center Norman OK 605 PM MDT Tue Jul 7 2020 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Western South Dakota * Effective this Tuesday night from 605 PM until Midnight 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 A tornado or two possible SUMMARY...An ongoing thunderstorm cluster in southwest South Dakota will develop northeastward, while a separate cluster in southeast Montana will move into northwest South Dakota. Both of these storm clusters will be capable of producing damaging winds and large hail. There is also some chance for embedded supercell structures capable of producing an isolated tornado. The severe thunderstorm watch area is approximately along and 60 statute miles east and west of a line from 40 miles northeast of Buffalo SD to 35 miles west southwest of Philip SD. 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. && 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 550. Mean storm motion vector 26035. ...Thompson

Hazard Tornadoes EF2+ Tornadoes Likelihood Low Very Low Severe Wind 65 kt+ Wind Moderate Low Severe Hail 2"+ Hail Moderate Moderate

Note: The Aviation Watch (SAW) product is an approximation to the watch area. The actual watch is depicted by the shaded areas.

SAW9 WW 339 SEVERE TSTM SD 080005Z - 080600Z AXIS..60 STATUTE MILES EAST AND WEST OF LINE.. 40NE 2WX/BUFFALO SD/ - 35WSW PHP/PHILIP SD/ ..AVIATION COORDS.. 50NM E/W /53S DIK - 34ESE RAP/ HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS. MAX TOPS TO 550. MEAN STORM MOTION VECTOR 26035. LAT...LON 45970168 43850104 43850345 45970418 THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS FOR WOU9. Watch 339 Status Report Messages: STATUS REPORT #5 ON WW 339 VALID 080415Z - 080540Z SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 SE Y22 TO 50 SE 2WX TO 30 WSW 2WX. ..DIAL..07/08/20 ATTN...WFO...UNR... && STATUS REPORT FOR WS 339 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS SDC063-105-080540- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE HARDING PERKINS $$ THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. $$ STATUS REPORT #4 ON WW 339 VALID 080250Z - 080340Z SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SW PHP TO 60 NNE RAP TO 35 E 4BQ. ..MOORE..07/08/20 ATTN...WFO...UNR... && STATUS REPORT FOR WS 339 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS SDC055-063-105-137-080340- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE HAAKON HARDING PERKINS ZIEBACH $$ THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. $$ STATUS REPORT #3 ON WW 339 VALID 080220Z - 080340Z SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 SE PHP TO 35 WSW PHP TO 10 N RAP TO 40 WSW 2WX. ..MOORE..07/08/20 ATTN...WFO...UNR... && STATUS REPORT FOR WS 339 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS SDC019-055-063-093-105-137-080340- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BUTTE HAAKON HARDING MEADE PERKINS ZIEBACH $$ THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. $$ STATUS REPORT #2 ON WW 339 VALID 080150Z - 080240Z SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 55 NW MHN TO 55 NE CDR TO 60 WNW RAP TO 30 E 4BQ. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1135 ..MOORE..07/08/20 ATTN...WFO...UNR... && STATUS REPORT FOR WS 339 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS SDC007-019-055-063-071-081-093-103-105-137-080240- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT BUTTE HAAKON HARDING JACKSON LAWRENCE MEADE PENNINGTON PERKINS ZIEBACH $$ THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. $$ STATUS REPORT #1 ON WW 339 VALID 080105Z - 080240Z SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 E CDR TO 30 WSW RAP TO 55 WNW RAP TO 40 WSW 2WX. FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1135 ..MOORE..07/08/20 ATTN...WFO...UNR... && STATUS REPORT FOR WS 339 SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS SDC007-019-055-063-071-081-093-102-103-105-137-080240- SD . SOUTH DAKOTA COUNTIES INCLUDED ARE BENNETT BUTTE HAAKON HARDING JACKSON LAWRENCE MEADE OGLALA LAKOTA PENNINGTON PERKINS ZIEBACH $$ THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES. $$