171 WHUS54 KMOB 201500 SMWMOB GMZ670-675-201630- /O.NEW.KMOB.MA.W.0160.260820T1500Z-260820T1630Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Mobile AL 1000 AM CDT Thu Aug 20 2026 The National Weather Service in Mobile has issued a * Special Marine Warning for... Waters from Okaloosa-Walton County Line to Pensacola FL from 20 to 60 NM... Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM... * Until 1130 AM CDT. * At 1000 AM CDT, strong thunderstorms capable of producing waterspouts were located along a line extending from 36 nm south of Gulf Shores Beach to 31 nm south of Okaloosa Deep Water Reef, moving northeast at 5 knots. HAZARD...Waterspouts and wind gusts to 40 knots. SOURCE...Radar. IMPACT...Waterspouts can easily overturn boats and create locally hazardous seas. Small craft could be damaged in briefly higher winds and suddenly higher waves. * Strong thunderstorms will remain over mainly open waters. && LAT...LON 2981 8792 2992 8763 2998 8734 2999 8679 2975 8640 2926 8640 2936 8648 2939 8669 2922 8790 TIME...MOT...LOC 1500Z 224DEG 7KT 2965 8756 2944 8655 WATERSPOUT...POSSIBLE HAIL...0.00IN WIND...40KTS $$ KLG  022 WGUS71 KPBZ 201500 FFSPBZ Flash Flood Statement National Weather Service Pittsburgh PA 1100 AM EDT Thu Aug 20 2026 OHC013-067-081-WVC009-051-069-201510- /O.CAN.KPBZ.FF.W.0118.000000T0000Z-260820T1515Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Belmont OH-Harrison OH-Jefferson OH-Brooke WV-Marshall WV-Ohio WV- 1100 AM EDT Thu Aug 20 2026 ...FLASH FLOOD WARNING FOR BELMONT, SOUTHEASTERN HARRISON, SOUTH CENTRAL JEFFERSON OH, BROOKE, MARSHALL AND OHIO COUNTIES HAS BEEN REPLACED WITH A FLOOD WARNING... && LAT...LON 4016 8103 4022 8103 4022 8052 3984 8052 3986 8101 3986 8106 $$ MLB  014 WGUS71 KPBZ 201505 FFSPBZ Flash Flood Statement National Weather Service Pittsburgh PA 1105 AM EDT Thu Aug 20 2026 PAC003-051-059-125-129-201700- /O.CON.KPBZ.FF.W.0121.000000T0000Z-260820T1700Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Allegheny PA-Fayette PA-Greene PA-Washington PA-Westmoreland PA- 1105 AM EDT Thu Aug 20 2026 ...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1 PM EDT THIS AFTERNOON FOR ALLEGHENY, WESTERN FAYETTE, NORTHEASTERN GREENE, CENTRAL WASHINGTON AND SOUTHWESTERN WESTMORELAND COUNTIES... At 1105 AM EDT, local fire department reported thunderstorms producing heavy rain across the warned area. Between 0.5 and 1.5 inches of rain have fallen. Additional rainfall amounts up to 0.5 inches are possible in the warned area. Flash flooding is already occurring. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Local fire department reported flooded roadways in Baldwin. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. Some locations that will experience flash flooding include... Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township, Monroeville, Moon Township, McMurray, McKeesport, Uniontown, Canonsburg, Avella, Gastonville, Shaler Township, Plum, West Mifflin, North Side Pittsburgh, Baldwin and Upper St. Clair. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4042 8052 4048 8047 4048 8036 4053 8029 4053 7965 3981 7962 3981 8003 4022 8005 4022 8052 FLASH FLOOD...OBSERVED $$ MLB  624 WGUS51 KPBZ 201510 FFWPBZ PAC005-051-063-129-201815- /O.NEW.KPBZ.FF.W.0122.260820T1510Z-260820T1815Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pittsburgh PA 1110 AM EDT Thu Aug 20 2026 The National Weather Service in Pittsburgh has issued a * Flash Flood Warning for... North Central Fayette County in southwestern Pennsylvania... Westmoreland County in southwestern Pennsylvania... Southwestern Armstrong County in west central Pennsylvania... Southwestern Indiana County in west central Pennsylvania... * Until 215 PM EDT. * At 1110 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Up to 0.5 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Greensburg, Jeannette, Latrobe, Vandergrift, Apollo, Murrysville, Mount Pleasant, Scottdale, McChesneytown-Loyalhanna, Blairsville, Manor, Youngwood, Derry, Delmont, Lawson Heights, New Stanton and Leechburg. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4067 7969 4065 7919 4022 7918 4006 7967 FLASH FLOOD...RADAR INDICATED $$ MLB  974 WGUS51 KPBZ 201529 FFWPBZ PAC005-063-065-129-201830- /O.NEW.KPBZ.FF.W.0123.260820T1529Z-260820T1830Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Pittsburgh PA 1129 AM EDT Thu Aug 20 2026 The National Weather Service in Pittsburgh has issued a * Flash Flood Warning for... East Central Westmoreland County in southwestern Pennsylvania... Southeastern Armstrong County in west central Pennsylvania... Indiana County in west central Pennsylvania... Southern Jefferson PA County in west central Pennsylvania... * Until 230 PM EDT. * At 1129 AM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 0.5 and 1 inch of rain has fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Indiana, Punxsutawney, Kittanning, Homer City, Ford City, Black Lick, West Kittanning, Clymer, Sykesville, Rural Valley, New Florence, Big Run, Dayton, Chevy Chase Heights, Rossiter, West Hills, Seward, Bolivar, Ernest and Marion Center. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 4065 7953 4091 7954 4105 7880 4074 7881 4072 7880 4072 7881 4042 7896 4026 7908 4027 7919 4064 7920 FLASH FLOOD...RADAR INDICATED $$ MLB  578 WGUS51 KCTP 201540 FFWCTP PAC021-027-033-201845- /O.NEW.KCTP.FF.W.0063.260820T1540Z-260820T1845Z/ /00000.U.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service State College PA 1140 AM EDT Thu Aug 20 2026 The National Weather Service in State College has issued a * Flash Flood Warning for... Northern Cambria County in central Pennsylvania... Southwestern Centre County in central Pennsylvania... Southern Clearfield County in central Pennsylvania... * Until 245 PM EDT. * At 1140 AM EDT, Doppler radar indicated heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by heavy rain. SOURCE...Radar indicated. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Clearfield, Northern Cambria, Philipsburg, Woodland, Curwensville, Patton, Hyde, Hastings, Osceola Mills, Plymptonville, Chester Hill, Carrolltown, Houtzdale, North Philipsburg, South Philipsburg, Sandy Ridge, Jeffries, Prince Gallitzin State Park, Black Moshannon State Park and Belsano. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be aware of your surroundings and do not drive on flooded roads. && LAT...LON 4072 7880 4106 7880 4106 7840 4093 7794 4074 7824 4074 7830 4073 7833 4073 7836 4072 7835 4050 7891 4066 7884 FLASH FLOOD...RADAR INDICATED $$ Evanego  502 WUUS53 KFGF 201558 SVRFGF MNC159-201630- /O.NEW.KFGF.SV.W.0157.260820T1558Z-260820T1630Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Grand Forks ND 1058 AM CDT Thu Aug 20 2026 The National Weather Service in Grand Forks has issued a * Severe Thunderstorm Warning for... Southern Wadena County in central Minnesota... * Until 1130 AM CDT. * At 1058 AM CDT, a severe thunderstorm was located 7 miles southeast of Blue Grass, or 34 miles west of Brainerd, moving east at 30 mph. HAZARD...Quarter size hail. SOURCE...Radar indicated. IMPACT...Damage to vehicles is expected. * Locations impacted include... Staples Airport, Blue Grass, and Oylen. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Large hail, damaging wind, and continuous cloud to ground lightning are occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. && LAT...LON 4637 9473 4637 9489 4645 9509 4656 9505 4659 9486 4658 9478 4639 9478 4640 9476 4638 9475 4638 9473 TIME...MOT...LOC 1558Z 292DEG 25KT 4647 9490 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...1.00 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...<50 MPH $$ Thomas