Alert archive / Utah / Flash Flood Watches in 2021
Flash Flood Watch 13, NWS Salt Lake City, UT
NWS Salt Lake City, UT issued this flash flood watch at Aug 16, 2021, 2:18 PM MDT for 19 counties in Utah. It took effect at Aug 17, 2021, 12:00 PM MDT. It was in force for 42 hr.
The area
The counties it named.
The facts
- Issued
- Aug 16, 2021, 2:18 PM MDT (20:18 UTC)
- In effect from
- Aug 17, 2021, 12:00 PM MDT
- Expired
- Aug 19, 2021, 6:00 AM MDT
- In force
- 42 hr
- Issued by
- NWS Salt Lake City, UT
- Flood severity
- None
Counties Beaver County, UT, Carbon County, UT, Duchesne County, UT, Emery County, UT, Garfield County, UT, Iron County, UT, Juab County, UT, Kane County, UT, Millard County, UT, Piute County, UT, Salt Lake County, UT, San Juan County, UT, Sanpete County, UT, Sevier County, UT, Summit County, UT, Utah County, UT, Wasatch County, UT, Washington County, UT, Wayne County, UT
The radar
The Cedar City radar (KICX), 184 km from the middle of the area, began a volume at 20:19 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Salt Lake City I, UT (KSLC), launched 12:00Z, 8.3 hours before the alert went out and 200 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3298 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 44 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
339 WGUS65 KSLC 162018 FFASLC URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Salt Lake City UT 218 PM MDT Mon Aug 16 2021 UTZ111-113-117-120-121-125>131-171200- /O.NEW.KSLC.FF.A.0013.210817T1800Z-210818T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 218 PM MDT Mon Aug 16 2021 ...FLASH FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH TUESDAY EVENING... The National Weather Service in Salt Lake City has issued a * Flash Flood Watch for a portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * From Tuesday afternoon through Tuesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area Tuesday afternoon and evening. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ MPS
8 follow-up statements
061 WGUS65 KSLC 170914 FFASLC URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Salt Lake City UT 314 AM MDT Tue Aug 17 2021 UTZ111-113-117-120-121-125>131-172200- /O.EXT.KSLC.FF.A.0013.210817T1800Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 314 AM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH NOW IN EFFECT FROM NOON MDT TODAY THROUGH WEDNESDAY EVENING... The Flash Flood Watch is now in effect for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * From Noon MDT today through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area Tuesday afternoon through Wednesday evening, with a slight decrease in rainfall rates between late Tuesday night through Wednesday morning. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ LC
556 WGUS65 KSLC 171528 FFASLC URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Salt Lake City UT 928 AM MDT Tue Aug 17 2021 UTZ123-124-181200- /O.EXB.KSLC.FF.A.0013.210818T0500Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lower Washington County-Zion National Park- Including the cities of St George, Ivins, Hurricane, and Springdale 928 AM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... The National Weather Service in Salt Lake City has expanded the * Flash Flood Watch to include a portion of Utah, including the following areas, Lower Washington County and Zion National Park. * From this evening through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this evening into Wednesday evening. There may be a decrease in rainfall rates Wednesday morning through early Wednesday afternoon. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ111-113-117-120-121-125>131-181200- /O.CON.KSLC.FF.A.0013.210817T1800Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 928 AM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * Through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this afternoon through Wednesday evening, with a slight decrease in rainfall rates between late tonight and Wednesday morning. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CRK
049 WGUS65 KSLC 171600 FFASLC URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Salt Lake City UT 1000 AM MDT Tue Aug 17 2021 UTZ112-114-181200- /O.EXB.KSLC.FF.A.0013.210817T2200Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Uinta Mountains-Western Uinta Basin- Including the cities of Moon Lake, Duchesne, Mirror Lake Highway, and Roosevelt 1000 AM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 4 PM MDT THIS AFTERNOON THROUGH WEDNESDAY EVENING... The National Weather Service in Salt Lake City has expanded the * Flash Flood Watch to include a portion of Utah, including the following areas, Western Uinta Basin and Western Uinta Mountains. * From 4 PM MDT this afternoon through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area late this afternoon through Wednesday evening. * Heavy rainfall may result in flash flooding. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ111-113-117-120-121-125>131-181200- /O.CON.KSLC.FF.A.0013.210817T1800Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 1000 AM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * Through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this afternoon through Wednesday evening, with a slight decrease in rainfall rates between late tonight and Wednesday morning. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ123-124-181200- /O.CON.KSLC.FF.A.0013.210818T0500Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lower Washington County-Zion National Park- Including the cities of St George, Ivins, Hurricane, and Springdale 1000 AM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM THIS EVENING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Lower Washington County and Zion National Park. * From this evening through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this evening into Wednesday evening. There may be a decrease in rainfall rates Wednesday morning through early Wednesday afternoon. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CRK
686 WGUS65 KSLC 172253 FFASLC URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Salt Lake City UT 453 PM MDT Tue Aug 17 2021 UTZ122-181200- /O.EXA.KSLC.FF.A.0013.210818T0500Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Southwest Utah- Including the cities of Cedar City, Beaver, and Milford 453 PM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 11 PM MDT THIS EVENING THROUGH WEDNESDAY EVENING... The National Weather Service in Salt Lake City has expanded the * Flash Flood Watch to include a portion of Utah, including the following area, Southwest Utah. * From 11 PM MDT this evening through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this evening into Wednesday evening. There may be a decrease in rainfall rates Wednesday morning through early Wednesday afternoon. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ111-113-117-120-121-125>131-181200- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 453 PM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * Through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this afternoon through Wednesday evening, with a slight decrease in rainfall rates between late tonight and Wednesday morning. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ112-114-181200- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Uinta Mountains-Western Uinta Basin- Including the cities of Moon Lake, Duchesne, Mirror Lake Highway, and Roosevelt 453 PM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Western Uinta Basin and Western Uinta Mountains. * Through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area late this afternoon through Wednesday evening. * Heavy rainfall may result in flash flooding. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ123-124-181200- /O.CON.KSLC.FF.A.0013.210818T0500Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Lower Washington County-Zion National Park- Including the cities of St George, Ivins, Hurricane, and Springdale 453 PM MDT Tue Aug 17 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM 11 PM MDT THIS EVENING THROUGH WEDNESDAY EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Lower Washington County and Zion National Park. * From 11 PM MDT this evening through Wednesday evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area this evening into Wednesday evening. There may be a decrease in rainfall rates Wednesday morning through early Wednesday afternoon. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ CRK
841 WGUS65 KSLC 181016 FFASLC Flood Watch National Weather Service Salt Lake City UT 416 AM MDT Wed Aug 18 2021 UTZ111-113-117-120-121-125>131-182215- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 416 AM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * Through this evening. * Thunderstorms will increase in intensity again by late this morning and will be capable of producing torrential rainfall across the watch area through late this evening. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ122>124-182215- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Southwest Utah-Lower Washington County-Zion National Park- Including the cities of Milford, St George, Hurricane, Cedar City, Springdale, Beaver, and Ivins 416 AM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Lower Washington County, Southwest Utah and Zion National Park. * Through this evening. * Thunderstorms capable of producing torrential rainfall are expected across the watch area later this morning and through late this evening. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ112-114-182215- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Uinta Mountains-Western Uinta Basin- Including the cities of Moon Lake, Duchesne, Mirror Lake Highway, and Roosevelt 416 AM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Western Uinta Basin and Western Uinta Mountains. * Through this evening. * Thunderstorms will increase in intensity again and will be capable of producing torrential rainfall across the watch area through late this evening. * Heavy rainfall may result in flash flooding. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ LC
051 WGUS65 KSLC 182015 FFASLC URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Salt Lake City UT 215 PM MDT Wed Aug 18 2021 UTZ111-113-117-120-121-125>131-191200- /O.EXT.KSLC.FF.A.0013.000000T0000Z-210819T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 215 PM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch is now in effect for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * Through late tonight. * Thunderstorms will increase in intensity again by late this morning and will be capable of producing torrential rainfall across the watch area through late this evening. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ122>124-191200- /O.EXT.KSLC.FF.A.0013.000000T0000Z-210819T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Southwest Utah-Lower Washington County-Zion National Park- Including the cities of Milford, St George, Hurricane, Cedar City, Springdale, Beaver, and Ivins 215 PM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH NOW IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch is now in effect for * A portion of Utah, including the following areas, Lower Washington County, Southwest Utah and Zion National Park. * Through late tonight. * Thunderstorms capable of producing torrential rainfall are expected across the watch area later this morning and through late this evening. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ112-114-190600- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Uinta Mountains-Western Uinta Basin- Including the cities of Moon Lake, Duchesne, Mirror Lake Highway, and Roosevelt 215 PM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Western Uinta Basin and Western Uinta Mountains. * Until Midnight MDT tonight. * Thunderstorms will increase in intensity again and will be capable of producing torrential rainfall across the watch area through late this evening. * Heavy rainfall may result in flash flooding. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ SW
060 WGUS65 KSLC 190227 FFASLC Flood Watch National Weather Service Salt Lake City UT 827 PM MDT Wed Aug 18 2021 UTZ112-114-190330- /O.CAN.KSLC.FF.A.0013.000000T0000Z-210819T0600Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Western Uinta Mountains-Western Uinta Basin- Including the cities of Moon Lake, Duchesne, Mirror Lake Highway, and Roosevelt 827 PM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch has been cancelled for a portion of Utah, including the following areas, Western Uinta Basin and Western Uinta Mountains. The Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ UTZ111-113-117-120-121-125>131-191200- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Panguitch, Scofield, Goblin Valley, Circleville, Alton, Price, Torrey, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Joes Valley, and Big Water 827 PM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys and Western Canyonlands. * Until 6 AM MDT Thursday. * Showers and occasional thunderstorms will continue across the watch area through the overnight hours. Heavy rainfall can be expected with any thunderstorms. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ UTZ122>124-191200- /O.CON.KSLC.FF.A.0013.000000T0000Z-210819T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Southwest Utah-Lower Washington County-Zion National Park- Including the cities of Milford, St George, Hurricane, Cedar City, Springdale, Beaver, and Ivins 827 PM MDT Wed Aug 18 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 6 AM MDT THURSDAY... The Flash Flood Watch continues for * A portion of Utah, including the following areas, Lower Washington County, Southwest Utah and Zion National Park. * Until 6 AM MDT Thursday. * Showers and occasional thunderstorms will continue across the watch area through the overnight hours. Heavy rainfall can be expected with any thunderstorms. * Heavy rainfall may result in flash flooding, especially in slot canyons, slickrock areas, small streams and normally dry washes. Debris flows are also possible near recent burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ MPS
079 WGUS65 KSLC 191151 FFASLC Flood Watch National Weather Service Salt Lake City UT 551 AM MDT Thu Aug 19 2021 UTZ111-113-117-120>131-191300- /O.EXP.KSLC.FF.A.0013.000000T0000Z-210819T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Wasatch Mountains South of I-80-Wasatch Plateau/Book Cliffs-Central Mountains-Castle Country-San Rafael Swell-Southwest Utah-Lower Washington County-Zion National Park-Southern Mountains-Upper Sevier River Valleys-Bryce Canyon Country-South Central Utah-Capitol Reef National Park and Vicinity-Western Canyonlands-Glen Canyon Recreation Area/Lake Powell- Including the cities of Loa, Springdale, Hurricane, Panguitch, Scofield, Ivins, Goblin Valley, Milford, Circleville, Alton, Price, Torrey, Cedar City, St George, Brighton, Koosharem, Fish Lake, Emery, Alta, Bryce Canyon City, Green River, Escalante, Joes Valley, Cove Fort, Hanksville, Kanab, Bullfrog, Indian Canyon, Castle Dale, Brian Head, Beaver, and Big Water 551 AM MDT Thu Aug 19 2021 ...FLASH FLOOD WATCH WILL EXPIRE AT 6 AM MDT EARLY THIS MORNING... The Flash Flood Watch will expire at 6 AM MDT early this morning for a portion of Utah, including the following areas, Castle Country, Central Mountains, San Rafael Swell, Wasatch Plateau/Book Cliffs, Wasatch Mountains South of I-80, Bryce Canyon Country, Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Southern Mountains, Upper Sevier River Valleys, Western Canyonlands, Lower Washington County, Southwest Utah and Zion National Park. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ LC
The office that day
Everything else NWS Salt Lake City, UT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 11:45 AM MDT | Red Flag Warning | SLC | Box Elder, Cache, Davis, Juab, Millard, Morgan and 8 more | 33 hr |
Nearby
Flash Flood Watches in Utah, 2021Every flash flood watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.