SPC
SPC Severe Thunderstorm Watch 560
WW 560 SEVERE TSTM MT 252145Z – 260500Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 560 NWS Storm Prediction Center Norman OK 345 PM MDT Thu Jul 25 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of North Central Montana * Effective this Thursday afternoon and evening from 345 PM until 1100 PM MDT. * Primary threats include... Scattered damaging winds likely with isolated significant gusts to 75 mph possible Isolated large hail events to 1.5 inches in diameter possible SUMMARY...Thunderstorms will continue to intensify over north-central Montana and track quickly eastward through the afternoon and evening. Damaging wind gusts are the main threat with these storms. The severe thunderstorm watch area is approximately along and 85 statute miles east and west of a line from 50 miles east southeast of Lewistown MT to 70 miles northwest of Glasgow MT. 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. && AVIATION...A few severe thunderstorms with hail surface and aloft to 1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24035. ...Hart
SPC – No watches are valid as of Thu Jul 25 04:02:02 UTC 2024
No watches are valid as of Thu Jul 25 04:02:02 UTC 2024.
SPC Severe Thunderstorm Watch 559
WW 559 SEVERE TSTM AZ 242100Z – 250400Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 559 NWS Storm Prediction Center Norman OK 200 PM MST Wed Jul 24 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and southern Arizona * Effective this Wednesday afternoon and evening from 200 PM until 900 PM MST. * Primary threats include... Isolated damaging wind gusts to 70 mph possible SUMMARY...Clusters of thunderstorms will form over the Rim and spread southwestward to the lower deserts through late evening. The storm environment will favor strong downdrafts capable of producing occasional damaging/severe outflow gusts of 60-70 mph. The severe thunderstorm watch area is approximately along and 75 statute miles north and south of a line from 30 miles west southwest of Phoenix AZ to 65 miles east northeast of Tucson AZ. 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 0.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 550. Mean storm motion vector 03020. ...Thompson
SPC – No watches are valid as of Mon Jul 22 02:17:02 UTC 2024
No watches are valid as of Mon Jul 22 02:17:02 UTC 2024.
SPC Severe Thunderstorm Watch 558
WW 558 SEVERE TSTM AZ 212050Z – 220300Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 558 NWS Storm Prediction Center Norman OK 150 PM MST Sun Jul 21 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and South-Central Arizona * Effective this Sunday afternoon and evening from 150 PM until 800 PM MST. * Primary threats include... Scattered damaging winds likely with isolated significant gusts to 75 mph possible SUMMARY...A broken linear cluster of thunderstorms will move southward through the afternoon into the evening across the Watch area. The stronger thunderstorm cores and associated thunderstorm outflow will be potentially capable of 60 to 75 mph gusts as this activity moves into the lower deserts. Marginally severe hail (diameter up to 1 inch) may accompany the stronger thunderstorms this afternoon near the Mogollon Rim. The severe thunderstorm watch area is approximately along and 60 statute miles north and south of a line from 55 miles west southwest of Prescott AZ to 95 miles east southeast of Phoenix AZ. 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 1 inch. Extreme turbulence and surface wind gusts to 65 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 01015. ...Smith
SPC – No watches are valid as of Sat Jul 20 05:02:02 UTC 2024
No watches are valid as of Sat Jul 20 05:02:02 UTC 2024.
