214 WGUS54 KEWX 212001 FFWEWX TXC491-212315- /O.EXT.KEWX.FF.W.0011.000000T0000Z-260421T2315Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Austin/San Antonio TX 301 PM CDT Tue Apr 21 2026 The National Weather Service in Austin/San Antonio has extended the * Flash Flood Warning for... Central Williamson County in south central Texas... * Until 615 PM CDT. * At 301 PM CDT, Emergency management reported several low water crossings remain closed due to flooding throughout Williamson County. Between 2 and 4 inches of rain have fallen. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is already occurring. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Emergency management reported. IMPACT...Life threatening flash flooding of creeks and streams, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Round Rock, Georgetown, Taylor, Serenada, Leander, Hutto, Liberty Hill, Jarrell, Florence, Thrall, Weir, Georgetown Dam, Sun City, Andice, Coupland, Jonah, Walburg, Theon, Waterloo and Seward Junction. 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. Stay away or be swept away. River banks and culverts can become unstable and unsafe. In hilly terrain there are hundreds of low water crossings which are potentially dangerous in heavy rain. Do not attempt to cross flooded roads. Find an alternate route. && LAT...LON 3058 9768 3067 9797 3087 9780 3061 9724 3048 9735 FLASH FLOOD...OBSERVED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ TRAN  046 FZUS73 KLOT 212016 MWSLOT Marine Weather Statement National Weather Service Chicago/Romeoville 316 PM CDT Tue Apr 21 2026 LMZ741>745-777-779-212215- 316 PM CDT Tue Apr 21 2026 ...STRONG THUNDERSTORMS OVER THE WATERS... The areas affected include... Nearshore Waters from Wilmette Harbor to Calumet Harbor... Nearshore Waters from Calumet Harbor to Michigan City... Open Waters from Winthrop Harbor to Michigan City out to Mid Lake... At 316 PM CDT, Doppler radar indicated strong thunderstorms, capable of producing winds to around 30 knots and small hail. These thunderstorms were located along a line extending from near Midway Airport to 9 nm northwest of St. Joseph Light, moving east southeast at 45 knots. Locations impacted include... Harrison-Dever Crib, Wilmette Harbor, 31st Street Harbor, Monroe Harbor, Burns Harbor, Calumet Harbor, Indiana Harbor, Montrose Harbor, Burnham Harbor, Hammond Marina, Jackson Park Harbor, and Marina Shores at Dune Harbor. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && LAT...LON 4162 8733 4164 8743 4167 8742 4169 8750 4179 8758 4178 8758 4189 8762 4189 8760 4208 8768 4211 8760 4213 8761 4215 8697 4179 8697 4179 8696 4172 8691 4163 8716 4162 8732 4161 8733 $$ RC  210 FZUS73 KIWX 212019 MWSIWX Marine Weather Statement National Weather Service Northern Indiana 419 PM EDT Tue Apr 21 2026 LMZ043-046-080-212115- 419 PM EDT Tue Apr 21 2026 A Marine Weather Statement has been issued for the following areas... Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to mid-line of lake.... Michigan City IN to New Buffalo MI... New Buffalo MI to St Joseph MI... At 418 PM EDT, Doppler radar indicated a cluster of strong thunderstorms across the area, capable of producing winds to around 30 knots and small hail. This thunderstorm was moving southeast at 45 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && LAT...LON 4179 8696 4179 8697 4212 8696 4213 8657 4211 8649 4194 8658 4189 8662 4180 8675 4179 8676 4172 8691 $$ MCS