Alert archive / Nevada / Flash Flood Watches in 2021
Flash Flood Watch 3, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood watch at Jul 19, 2021, 2:37 AM PDT for Inyo County, California; Mohave County, Arizona; Esmeralda County, Nye County, Nevada. It took effect at Jul 19, 2021, 12:00 PM PDT. It was in force for 8 hr.
The area
The counties it named.
The facts
- Issued
- Jul 19, 2021, 2:37 AM PDT (09:37 UTC)
- In effect from
- Jul 19, 2021, 12:00 PM PDT
- Expired
- Jul 19, 2021, 8:00 PM PDT
- In force
- 8 hr
- Issued by
- NWS Las Vegas, NV
- Flood severity
- None
Counties Mohave County, AZ, Inyo County, CA, Esmeralda County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 194 km from the middle of the area, began a volume at 09:40 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
Las Vegas, NV (KVEF), launched 00:00Z, 9.6 hours before the alert went out and 99 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
- 470 J/kg
- Mixed-layer CIN
- -221 J/kg
- Mixed-layer LCL
- 2357 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -43 m²/s²
- 0-3 km storm-relative helicity
- -38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
108 WGUS65 KVEF 190937 FFAVEF URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Las Vegas NV 237 AM PDT Mon Jul 19 2021 .Anomalously high moisture values are in place across the southern Great Basin and Mojave Desert. Thunderstorms that develop have the potential of producing heavy rain. AZZ001-003-191930- /O.NEW.KVEF.FF.A.0003.210719T1900Z-210720T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Northwest Deserts- Including the cities of Western Grand Canyon, Pipe Spring National Monument, Tuweep, Golden Valley, Mt Trumbull, Colorado City, Valentine, Yucca, Kingman, Wikieup, and Dolan Springs 237 AM MST Mon Jul 19 2021 ...FLASH FLOOD WATCH IN EFFECT FROM NOON MST TODAY THROUGH THIS EVENING... The National Weather Service in Las Vegas has issued a * Flash Flood Watch for a portion of northwest Arizona, including the following areas, Northwest Deserts and Northwest Plateau. * From Noon MST today through this evening. * The potential for heavy rainfall and flash flooding exists this afternoon and evening over Mohave County as thunderstorms develop over the higher terrain then drift into the lower valleys. Rainfall rates of 1 to 1.5 inches an hour are possible. * In addition to flash flooding of washes and roadways in the watch area, debris flows will be possible near the Flag Fire burn area including the community of Pine Lake and Hualapai Mountain Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry washes is likely. The heavy rain will likely trigger rockslides, mudslides, and debris flows in steep terrain, especially in and around the Flag burn area. && $$ CAZ519-521-NVZ014-191930- /O.NEW.KVEF.FF.A.0003.210719T1900Z-210720T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sierra Slopes-White Mountains of Inyo County-Esmeralda and Central Nye County- Including the cities of Silver Peak, Westgard Pass, Bristlecone Pine, Goldfield, Aspendell, Whitney Portal, Dyer, and Beatty 237 AM PDT Mon Jul 19 2021 ...FLASH FLOOD WATCH IN EFFECT FROM NOON PDT TODAY THROUGH THIS EVENING... The National Weather Service in Las Vegas has issued a * Flash Flood Watch for portions of southeast California and south central Nevada, including the following areas, in southeast California, Eastern Sierra Slopes and White Mountains of Inyo County. In south central Nevada, Esmeralda and Central Nye County. * From Noon PDT today through this evening. * The potential for heavy rainfall and flash flooding exists this afternoon and evening over the eastern Sierra Slopes, White Mountains and Esmeralda County as thunderstorms develop over the higher terrain. Rainfall rates of up to 1 inch an hour are possible. * A Flash Flood Watch means that conditions may become favorable for flooding of creeks and stream in and around recent burn areas. In steep terrain, the rainfall could trigger rockfalls and deposit debris on roadways. Be prepared to take immediate action should rainfall trigger flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ BKP
2 follow-up statements
129 WGUS65 KVEF 191902 FFAVEF Flood Watch National Weather Service Las Vegas NV 1202 PM PDT Mon Jul 19 2021 .Anomalously high moisture values are in place across the southern Great Basin and Mojave Desert. Thunderstorms that develop have the potential of producing heavy rain. AZZ001-003-200300- /O.CON.KVEF.FF.A.0003.000000T0000Z-210720T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Northwest Deserts- Including the cities of Western Grand Canyon, Pipe Spring National Monument, Tuweep, Golden Valley, Mt Trumbull, Colorado City, Valentine, Yucca, Kingman, Wikieup, and Dolan Springs 1202 PM MST Mon Jul 19 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 PM MST THIS EVENING... The Flash Flood Watch continues for * A portion of northwest Arizona, including the following areas, Northwest Deserts and Northwest Plateau. * Until 8 PM MST this evening. * The potential for heavy rainfall and flash flooding exists this afternoon and evening over Mohave County as thunderstorms develop over the higher terrain then drift into the lower valleys. Rainfall rates of 1 to 1.5 inches an hour are possible. * In addition to flash flooding of washes and roadways in the watch area, debris flows will be possible near the Flag Fire burn area including the community of Pine Lake and Hualapai Mountain Park. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move away from recently burned areas. Life-threatening flooding of creeks, roads and normally dry washes is likely. The heavy rain will likely trigger rockslides, mudslides, and debris flows in steep terrain, especially in and around the Flag burn area. && $$ CAZ519-521-NVZ014-200300- /O.CON.KVEF.FF.A.0003.000000T0000Z-210720T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Eastern Sierra Slopes-White Mountains of Inyo County-Esmeralda and Central Nye County- Including the cities of Silver Peak, Westgard Pass, Bristlecone Pine, Goldfield, Aspendell, Whitney Portal, Dyer, and Beatty 1202 PM PDT Mon Jul 19 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... The Flash Flood Watch continues for * Portions of southeast California and south central Nevada, including the following areas, in southeast California, Eastern Sierra Slopes and White Mountains of Inyo County. In south central Nevada, Esmeralda and Central Nye County. * Until 8 PM PDT this evening. * The potential for heavy rainfall and flash flooding exists this afternoon and evening over the eastern Sierra Slopes, White Mountains and Esmeralda County as thunderstorms develop over the higher terrain. Rainfall rates of up to 1 inch an hour are possible. * A Flash Flood Watch means that conditions may become favorable for flooding of creeks and stream in and around recent burn areas. In steep terrain, the rainfall could trigger rockfalls and deposit debris on roadways. Be prepared to take immediate action should rainfall trigger flash flooding. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ JA
008 WGUS65 KVEF 200300 FFAVEF Flood Watch National Weather Service Las Vegas NV 800 PM PDT Mon Jul 19 2021 AZZ001-003-CAZ519-521-NVZ014-200400- /O.EXP.KVEF.FF.A.0003.000000T0000Z-210720T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Northwest Deserts-Eastern Sierra Slopes-White Mountains of Inyo County-Esmeralda and Central Nye County- Including the cities of Western Grand Canyon, Pipe Spring National Monument, Tuweep, Golden Valley, Mt Trumbull, Colorado City, Westgard Pass, Bristlecone Pine, Valentine, Aspendell, Whitney Portal, Goldfield, Dyer, Yucca, Beatty, Kingman, Wikieup, Silver Peak, and Dolan Springs 800 PM MST Mon Jul 19 2021 /800 PM PDT Mon Jul 19 2021/ ...FLASH FLOOD WATCH WILL EXPIRE AT 8 PM MST/8 PM PDT/ THIS EVENING... The Flash Flood Watch for portions of northwest Arizona, southeast California and south central Nevada, including the following areas, in northwest Arizona, Northwest Deserts and Northwest Plateau. In southeast California, Eastern Sierra Slopes and White Mountains of Inyo County. In south central Nevada, Esmeralda and Central Nye County will expire at 8 PM MST/8 PM PDT/ this evening. The Flash Flood Watch is cancelled. Widespread flash flooding is no longer expected to pose a threat however, isolated storms could lead to localized flooding. Please continue to heed remaining road closures. $$ JS
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 5:35 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 18, 6:24 PM PDT | Areal Flood Advisory | VEF | San Bernardino | 47 min |
| Jul 18, 7:10 PM PDT | Flash Flood Warning | VEF | San Bernardino | 3 hr |
| Jul 19, 2:42 PM PDT | Flash Flood Warning | VEF | Inyo | 3 hr |
| Jul 18, 5:20 PM PDT | Severe Thunderstorm Warning | VEF | Mohave | 40 min |
| Jul 18, 5:40 PM PDT | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 18, 6:20 PM PDT | Flash Flood Warning | VEF | Mohave | 6 hr |
| Jul 19, 2:31 PM PDT | Flash Flood Warning | VEF | Mohave | 3 hr |
| Jul 19, 3:31 PM PDT | Flash Flood Warning | VEF | Mohave | 3 hr |
Nearby
Flash Flood Watches in Nevada, 2021Flash Flood Watches in California, 2021Flash Flood Watches in Arizona, 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.