808 WGUS55 KSLC 102117 FFWSLC UTC001-110000- /O.NEW.KSLC.FF.W.0069.260810T2117Z-260811T0000Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Salt Lake City UT 317 PM MDT Mon Aug 10 2026 The National Weather Service in Salt Lake City has issued a * Flash Flood Warning for... The Cottonwood burn scar in... East Central Beaver County in southern Utah... * Until 600 PM MDT. * At 317 PM MDT, Doppler radar indicated thunderstorms producing heavy rain over the Cottonwood Burn Scar in Beaver county. Between 0.5 and 0.75 inches of rain have fallen. A flash flood wave has reached camera number one in Beaver Canyon and the storm has currently moved into the south fork of the Beaver River with additional rainfall. Flows are expected to increase over the next hour at the Beaver River camera one area. This flood wave will continue to move down canyon along the Beaver River and is expected to reach the Grove area within the next one to two hours. Excessive rainfall over the burn scar will result in debris flow. The debris flow can consist of rock, mud, vegetation and other loose materials. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding in and around the Cottonwood Burn Scar in Beaver county. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of areas in and around the Cottonwood Burn Scar. * Some locations that will experience flash flooding include... The Cottonwood Burn Scar in Beaver county, Beaver Canyon downstream into the Grove area. PRECAUTIONARY/PREPAREDNESS ACTIONS... This is a life threatening situation. Heavy rainfall will cause extensive and severe flash flooding of creeks...streams...and ditches in the Cottonwood Burn Scar. Severe debris flows can also be anticipated across roads. Roads and driveways may be washed away in places. If you encounter flood waters...climb to safety. Be aware of your surroundings and do not drive on flooded roads. Please report observed flooding to local emergency services or law enforcement and request they pass this information to the National Weather Service when you can do so safely. && LAT...LON 3826 11262 3828 11263 3834 11234 3829 11236 3825 11239 3822 11236 3819 11246 3824 11255 3827 11256 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ JCW 240 WGUS51 KLWX 102140 FFWLWX MDC005-025-510-110045- /O.NEW.KLWX.FF.W.0037.260810T2140Z-260811T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Baltimore MD/Washington DC 540 PM EDT Mon Aug 10 2026 The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... Southeastern Baltimore County in northern Maryland... Southwestern Harford County in northern Maryland... Extreme Northeastern Baltimore City in northern Maryland... * Until 845 PM EDT. * At 540 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 2 and 3 inches of rain have fallen. Flooding impacts will continue, but no additional rainfall is expected. Flash flooding is already occurring. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Baltimore... Middle River... Cockeysville... Aberdeen... Aberdeen Proving Ground... Back River... Millers Island... North Point State Park... Sparrows Point... Dundalk... Towson... Bel Air South... Essex... Parkville... Bel Air North... Carney... Perry Hall... Rosedale... Rossville... Mays Chapel... PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && LAT...LON 3957 7648 3960 7640 3954 7621 3940 7613 3934 7622 3934 7624 3929 7628 3929 7630 3933 7631 3919 7643 3918 7645 3923 7656 3932 7663 3942 7664 3951 7658 FLASH FLOOD...RADAR INDICATED $$ DHOF 259 WGUS55 KFGZ 102152 FFWFGZ AZC005-110045- /O.NEW.KFGZ.FF.W.0099.260810T2152Z-260811T0045Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service Flagstaff AZ 252 PM MST Mon Aug 10 2026 The National Weather Service in Flagstaff has issued a * Flash Flood Warning for... Coconino County in north central Arizona... * Until 545 PM MST /645 PM MDT/. * At 252 PM MST /352 PM MDT/, Doppler radar indicated thunderstorms producing heavy rain across the warned area from near Gray Mountain to just south of Desert View. Between 0.75 and 1.75 inches of rain have fallen. Additional rainfall amounts of 0.25 to 0.75 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Life threatening flash flooding. Thunderstorms producing flash flooding. SOURCE...Radar indicated. IMPACT...Life threatening flash flooding of creeks and streams, normally dry washes, urban areas, highways, streets and underpasses. * Some locations that will experience flash flooding include... Tappan Spring, Cameron, Gray Mountain and Little Colorado River Navajo Tribal Park. This includes the following highways... U.S. Highway 89 between mile markers 454 and 467. State Route 64 between mile markers 269 and 295. This includes the following swimming holes... Tappan Spring. This includes the following creeks, washes and rivers... Tonahakaad Spring, Campbell Francis Wash, Deer Tank Wash, Tappan Wash, Burro Canyon Wash, Lee Canyon, Jackrabbit Wash, Mays Wash, Moenkopi Wash, Cedar Wash, Needmore Wash, Little Colorado River and Landmark Wash. PRECAUTIONARY/PREPAREDNESS ACTIONS... Flooding of washes and creeks will occur, some dirt roads will become muddy and impassable. Paved roads and underpasses could become flooded as well. && LAT...LON 3596 11189 3583 11174 3563 11140 3569 11131 3579 11131 3585 11135 3592 11146 3595 11156 3598 11167 3600 11181 FLASH FLOOD...RADAR INDICATED FLASH FLOOD DAMAGE THREAT...CONSIDERABLE $$ JJ