Alert archive / Nevada / Flash Flood Watches in 2021
Flash Flood Watch 7, NWS Las Vegas, NV
NWS Las Vegas, NV issued this flash flood watch at Jul 29, 2021, 1:13 PM MST for Mohave County, Arizona; Inyo County, San Bernardino County, California; 4 counties in Nevada. It took effect at Jul 30, 2021, 12:00 PM MST. It was in force for 32 hr.
The area
The counties it named.
The facts
- Issued
- Jul 29, 2021, 1:13 PM MST (20:13 UTC)
- In effect from
- Jul 30, 2021, 12:00 PM MST
- Expired
- Jul 31, 2021, 8:04 PM MST
- In force
- 32 hr
- Issued by
- NWS Las Vegas, NV
- Flood severity
- None
Counties Mohave County, AZ, Inyo County, CA, San Bernardino County, CA, Clark County, NV, Esmeralda County, NV, Lincoln County, NV, Nye County, NV
The radar
The Las Vegas radar (KESX), 142 km from the middle of the area, began a volume at 20:15 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 12:00Z, 8.2 hours before the alert went out and 47 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
- 2 J/kg
- Mixed-layer CIN
- -212 J/kg
- Mixed-layer LCL
- 3039 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -24 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
629 WGUS65 KVEF 292013 FFAVEF URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Las Vegas NV 113 PM PDT Thu Jul 29 2021 .Another round of high monsoonal moisture is expected through the weekend that will lead to an increased risk for flash flooding across much of the region. Isolated to scattered thunderstorms capable of very high rainfall rates will be possible each afternoon Friday and Saturday and could linger into the overnight hours as well. AZZ001>003-036-CAZ519>522-524-526-527-NVZ014>022-301400- /O.NEW.KVEF.FF.A.0007.210730T1900Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts-Lake Mead National Recreation Area-Eastern Sierra Slopes-Owens Valley- White Mountains of Inyo County-Death Valley National Park-Eastern Mojave Desert-Cadiz Basin-San Bernardino County-Upper Colorado River Valley-Esmeralda and Central Nye County-Lincoln County-Northeast Clark County-Western Clark and Southern Nye County-Sheep Range- Spring Mountains-Red Rock Canyon-Las Vegas Valley-Lake Mead National Recreation Area-Southern Clark County- Including the cities of Western Grand Canyon, Rachel, Laughlin, Lake Havasu City, Colorado City, Goldfield, Hiko, Indian Springs, Silver Peak, Yucca, Independence, Henderson, Hayford Pk, Vidal Junction, Mitchell Caverns, Moapa, Amargosa Valley, Baker, Pahrump, Lone Pine, Beatty, Furnace Creek, Needles, Alamo, Red Rock Canyon, Desert Rock, Wikieup, Dolan Springs, North Las Vegas, Cal-Nev-Ari, Bullhead City, Golden Valley, Searchlight, Stovepipe Wells, Primm, Mt Trumbull, Oatman, Westgard Pass, Bristlecone Pine, Topock, Aspendell, Overton, Dyer, Panaca, Boulder City, The Town Of Mt Charleston, Mountain Pass, Tuweep, Caliente, Hoover Dam, Mohave Valley, Pipe Spring National Monument, Pioche, Olancha, Valentine, Las Vegas, Mesquite, Whitney Portal, Desert Hills, Kingman, Bishop, and Shoshone 113 PM MST Thu Jul 29 2021 /113 PM PDT Thu Jul 29 2021/ ...FLASH FLOOD WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE SATURDAY NIGHT... The National Weather Service in Las Vegas has issued a * Flash Flood Watch for portions of northwest Arizona, southeast California and Nevada, including the following areas, in northwest Arizona, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area, Northwest Deserts and Northwest Plateau. In southeast California, Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Eastern Sierra Slopes, Owens Valley, San Bernardino County-Upper Colorado River Valley and White Mountains of Inyo County. In Nevada, Esmeralda and Central Nye County, Lake Mead National Recreation Area, Las Vegas Valley, Lincoln County, Northeast Clark County, Sheep Range, Southern Clark County, Spring Mountains-Red Rock Canyon and Western Clark and Southern Nye County. * From Friday afternoon through late Saturday night. * Afternoon and evening thunderstorms are expected to develop both Friday and Saturday that will be capable of producing very high rainfall rates and areas of flash flooding. High terrain areas are favored for the highest rainfall totals, but these storms are expected to move into lower desert areas spreading the flash flood risk across much of the region as well. * Very heavy rainfall rates are expected which will lead to flash flooding. Especially in high terrain areas and in highly vulnerable debris flow areas such as burn scars. With several instances of flash flooding over the recent weeks, already flash flood prone washes and low water crossings will be likely to flood again. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared to take action when Flash Flood Warnings are issued and check to ensure you are able to receive them. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ TB
5 follow-up statements
777 WGUS65 KVEF 301328 FFAVEF Flood Watch National Weather Service Las Vegas NV 628 AM PDT Fri Jul 30 2021 .Another round of high monsoonal moisture is expected through the weekend that will lead to an increased risk for flash flooding across much of the region. Isolated to scattered thunderstorms capable of very high rainfall rates will be possible each afternoon today and Saturday and could linger into the overnight hours as well. AZZ001>003-036-CAZ519>522-524-526-527-NVZ014>022-301930- /O.CON.KVEF.FF.A.0007.210730T1900Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts- Lake Mead National Recreation Area-Eastern Sierra Slopes- Owens Valley-White Mountains of Inyo County- Death Valley National Park-Eastern Mojave Desert-Cadiz Basin- San Bernardino County-Upper Colorado River Valley- Esmeralda and Central Nye County-Lincoln County- Northeast Clark County-Western Clark and Southern Nye County- Sheep Range-Spring Mountains-Red Rock Canyon-Las Vegas Valley- Southern Clark County- 628 AM PDT Fri Jul 30 2021 /628 AM MST Fri Jul 30 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT FROM NOON PDT /NOON MST/ TODAY THROUGH LATE SATURDAY NIGHT... The Flash Flood Watch continues for * Portions of northwest Arizona, southeast California, and Nevada, including the following areas, in northwest Arizona, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area, Northwest Deserts, and Northwest Plateau. In southeast California, Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Eastern Sierra Slopes, Owens Valley, San Bernardino County-Upper Colorado River Valley, and White Mountains of Inyo County. In Nevada, Esmeralda and Central Nye County, Lake Mead National Recreation Area, Las Vegas Valley, Lincoln County, Northeast Clark County, Sheep Range, Southern Clark County, Spring Mountains-Red Rock Canyon, and Western Clark and Southern Nye County. * From noon PDT /noon MST/ today through late Saturday night * Afternoon and evening thunderstorms are expected to develop both today and Saturday that will be capable of producing very high rainfall rates and areas of flash flooding. High terrain areas are favored for the highest rainfall totals, but these storms are expected to move into lower desert areas spreading the flash flood risk across much of the region as well. * Very heavy rainfall rates are expected which will lead to flash flooding. Especially in high terrain areas and in highly vulnerable debris flow areas such as burn scars. With several instances of flash flooding over the recent weeks, already flash flood prone washes and low water crossings will be likely to flood again. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared to take action when Flash Flood Warnings are issued and check to ensure you are able to receive them. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$
702 WGUS65 KVEF 301927 FFAVEF URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Las Vegas NV 1227 PM PDT Fri Jul 30 2021 .Another round of high monsoonal moisture is expected through the weekend that will lead to an increased risk for flash flooding across much of the region. Isolated to scattered thunderstorms capable of very high rainfall rates will be possible each afternoon today and Saturday and could linger into the overnight hours as well. CAZ525-311400- /O.EXA.KVEF.FF.A.0007.000000T0000Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morongo Basin- Including the cities of Twentynine Palms, Yucca Valley, and Morongo Valley 1227 PM PDT Fri Jul 30 2021 ...FLASH FLOOD WATCH IN EFFECT THROUGH LATE SATURDAY NIGHT... The National Weather Service in Las Vegas has expanded the * Flash Flood Watch to include a portion of southeast California, including the following area, Morongo Basin. * Through late Saturday night. * Afternoon and evening thunderstorms are expected to develop both today and Saturday that will be capable of producing very high rainfall rates and areas of flash flooding. High terrain areas of the Morongo Basin are favored for the highest rainfall totals, and these storms could move into lower desert valley areas spreading the flash flood risk across the Twentynine Palms highway. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ AZZ001>003-036-CAZ519>522-524-526-527-NVZ014>022-311400- /O.CON.KVEF.FF.A.0007.000000T0000Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts-Lake Mead National Recreation Area-Eastern Sierra Slopes-Owens Valley- White Mountains of Inyo County-Death Valley National Park-Eastern Mojave Desert-Cadiz Basin-San Bernardino County-Upper Colorado River Valley-Esmeralda and Central Nye County-Lincoln County-Northeast Clark County-Western Clark and Southern Nye County-Sheep Range- Spring Mountains-Red Rock Canyon-Las Vegas Valley-Lake Mead National Recreation Area-Southern Clark County- Including the cities of Western Grand Canyon, Rachel, Laughlin, Lake Havasu City, Colorado City, Goldfield, Hiko, Indian Springs, Silver Peak, Yucca, Independence, Henderson, Hayford Pk, Vidal Junction, Mitchell Caverns, Moapa, Amargosa Valley, Baker, Pahrump, Lone Pine, Beatty, Furnace Creek, Needles, Alamo, Red Rock Canyon, Desert Rock, Wikieup, Dolan Springs, North Las Vegas, Cal-Nev-Ari, Bullhead City, Golden Valley, Searchlight, Stovepipe Wells, Primm, Mt Trumbull, Oatman, Westgard Pass, Bristlecone Pine, Topock, Aspendell, Overton, Dyer, Panaca, Boulder City, The Town Of Mt Charleston, Mountain Pass, Tuweep, Caliente, Hoover Dam, Mohave Valley, Pipe Spring National Monument, Pioche, Olancha, Valentine, Las Vegas, Mesquite, Whitney Portal, Desert Hills, Kingman, Bishop, and Shoshone 1227 PM MST Fri Jul 30 2021 /1227 PM PDT Fri Jul 30 2021/ ...FLASH FLOOD WATCH IS NOW IN EFFECT THROUGH LATE SATURDAY NIGHT... The Flash Flood Watch continues for * Portions of northwest Arizona, southeast California and Nevada, including the following areas, in northwest Arizona, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area, Northwest Deserts and Northwest Plateau. In southeast California, Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Eastern Sierra Slopes, Owens Valley, San Bernardino County-Upper Colorado River Valley and White Mountains of Inyo County. In Nevada, Esmeralda and Central Nye County, Lake Mead National Recreation Area, Las Vegas Valley, Lincoln County, Northeast Clark County, Sheep Range, Southern Clark County, Spring Mountains-Red Rock Canyon and Western Clark and Southern Nye County. * Through late Saturday night. * Afternoon and evening thunderstorms are expected to develop both today and Saturday that will be capable of producing very high rainfall rates and areas of flash flooding. High terrain areas such as the Spring Mountains and the Sierra Nevada are favored for the highest rainfall totals, but these storms are expected to move into lower desert valley areas spreading the flash flood risk across much of the region as well. * Very heavy rainfall rates are expected which will lead to flash flooding. Especially in high terrain areas and in highly vulnerable debris flow areas such as burn scars. With several instances of flash flooding over the recent weeks, already flash flood prone washes and low water crossings will be likely to flood again. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared to take action when Flash Flood Warnings are issued and check to ensure you are able to receive them. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ TB
597 WGUS65 KVEF 311207 FFAVEF Flood Watch National Weather Service Las Vegas NV 507 AM PDT Sat Jul 31 2021 .Another round of high monsoonal moisture is expected through the weekend that will lead to an increased risk for flash flooding across much of the region. Isolated to scattered thunderstorms capable of very high rainfall rates will be possible each afternoon today and could linger into the overnight hours as well. AZZ001>003-036-CAZ519>522-524>527-NVZ014>022-312100- /O.CON.KVEF.FF.A.0007.000000T0000Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts- Lake Mead National Recreation Area-Eastern Sierra Slopes- Owens Valley-White Mountains of Inyo County- Death Valley National Park-Eastern Mojave Desert-Morongo Basin- Cadiz Basin-San Bernardino County-Upper Colorado River Valley- Esmeralda and Central Nye County-Lincoln County- Northeast Clark County-Western Clark and Southern Nye County- Sheep Range-Spring Mountains-Red Rock Canyon-Las Vegas Valley- Southern Clark County- 507 AM PDT Sat Jul 31 2021 /507 AM MST Sat Jul 31 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for * Portions of northwest Arizona, southeast California, and Nevada, including the following areas, in northwest Arizona, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area, Northwest Deserts, and Northwest Plateau. In southeast California, Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Eastern Sierra Slopes, Morongo Basin, Owens Valley, San Bernardino County-Upper Colorado River Valley, and White Mountains of Inyo County. In Nevada, Esmeralda and Central Nye County, Lake Mead National Recreation Area, Las Vegas Valley, Lincoln County, Northeast Clark County, Sheep Range, Southern Clark County, Spring Mountains-Red Rock Canyon, and Western Clark and Southern Nye County. * Through late tonight * Afternoon and evening thunderstorms are expected to develop both today that will be capable of producing very high rainfall rates and areas of flash flooding. High terrain areas such as the Spring Mountains and the Sierra Nevada are favored for the highest rainfall totals, but these storms are expected to move into lower desert valley areas spreading the flash flood risk across much of the region as well. * Very heavy rainfall rates are expected which will lead to flash flooding. Especially in high terrain areas and in highly vulnerable debris flow areas such as burn scars. With several instances of flash flooding over the recent weeks, already flash flood prone washes and low water crossings will be likely to flood again. PRECAUTIONARY/PREPAREDNESS ACTIONS... Be prepared to take action when Flash Flood Warnings are issued and check to ensure you are able to receive them. Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$
983 WGUS65 KVEF 311936 FFAVEF Flood Watch National Weather Service Las Vegas NV 1236 PM PDT Sat Jul 31 2021 .Another day of high monsoonal moisture is expected today which will continue a high risk for flash flooding across much of the region. Isolated to scattered thunderstorms capable of very high rainfall rates will be possible through tonight. AZZ001>003-036-CAZ519>522-524-526-527-NVZ014>022-011200- /O.CON.KVEF.FF.A.0007.000000T0000Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts-Lake Mead National Recreation Area-Eastern Sierra Slopes-Owens Valley- White Mountains of Inyo County-Death Valley National Park-Eastern Mojave Desert-Cadiz Basin-San Bernardino County-Upper Colorado River Valley-Esmeralda and Central Nye County-Lincoln County-Northeast Clark County-Western Clark and Southern Nye County-Sheep Range- Spring Mountains-Red Rock Canyon-Las Vegas Valley-Lake Mead National Recreation Area-Southern Clark County- Including the cities of Western Grand Canyon, Rachel, Laughlin, Lake Havasu City, Colorado City, Goldfield, Hiko, Indian Springs, Silver Peak, Yucca, Independence, Henderson, Hayford Pk, Vidal Junction, Mitchell Caverns, Moapa, Amargosa Valley, Baker, Pahrump, Lone Pine, Beatty, Furnace Creek, Needles, Alamo, Red Rock Canyon, Desert Rock, Wikieup, Dolan Springs, North Las Vegas, Cal-Nev-Ari, Bullhead City, Golden Valley, Searchlight, Stovepipe Wells, Primm, Mt Trumbull, Oatman, Westgard Pass, Bristlecone Pine, Topock, Aspendell, Overton, Dyer, Panaca, Boulder City, The Town Of Mt Charleston, Mountain Pass, Tuweep, Caliente, Hoover Dam, Mohave Valley, Pipe Spring National Monument, Pioche, Olancha, Valentine, Las Vegas, Mesquite, Whitney Portal, Desert Hills, Kingman, Bishop, and Shoshone 1236 PM MST Sat Jul 31 2021 /1236 PM PDT Sat Jul 31 2021/ ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for * Portions of northwest Arizona, southeast California and Nevada, including the following areas, in northwest Arizona, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area, Northwest Deserts and Northwest Plateau. In southeast California, Cadiz Basin, Death Valley National Park, Eastern Mojave Desert, Eastern Sierra Slopes, Owens Valley, San Bernardino County-Upper Colorado River Valley and White Mountains of Inyo County. In Nevada, Esmeralda and Central Nye County, Lake Mead National Recreation Area, Las Vegas Valley, Lincoln County, Northeast Clark County, Sheep Range, Southern Clark County, Spring Mountains-Red Rock Canyon and Western Clark and Southern Nye County. * Through late tonight. * Afternoon and evening thunderstorms are expected again today that will continue producing very high rainfall rates and result in areas of flash flooding. High terrain areas are favored for the highest rainfall totals, but these storms are expected to move into lower desert valley areas spreading the flash flood risk across much of the region. * Very heavy rainfall rates are expected which will lead to flash flooding. Especially in high terrain areas and in highly vulnerable debris flow areas such as burn scars. With several instances of flash flooding over the recent weeks, already flash flood prone washes and low water crossings will be likely to flood again. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ CAZ525-011200- /O.CON.KVEF.FF.A.0007.000000T0000Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Morongo Basin- Including the cities of Twentynine Palms, Yucca Valley, and Morongo Valley 1236 PM PDT Sat Jul 31 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT... The Flash Flood Watch continues for * A portion of southeast California, including the following area, Morongo Basin. * Through late tonight. * Afternoon and evening thunderstorms are expected again today that will be capable of producing very high rainfall rates and areas of flash flooding. High terrain areas of the Morongo Basin are favored for the highest rainfall totals, and these storms could move into lower desert valley areas spreading the flash flood risk across the Twentynine Palms highway. * Very heavy rainfall rates are expected which will lead to flash flooding. Especially in high terrain areas and in highly vulnerable debris flow areas such as burn scars. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && $$ TB
681 WGUS65 KVEF 010304 FFAVEF Flood Watch National Weather Service Las Vegas NV 804 PM PDT Sat Jul 31 2021 AZZ001>003-036-CAZ519>522-524>527-NVZ014>022-010415- /O.CAN.KVEF.FF.A.0007.000000T0000Z-210801T1200Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Northwest Plateau-Lake Havasu and Fort Mohave-Northwest Deserts-Lake Mead National Recreation Area-Eastern Sierra Slopes-Owens Valley- White Mountains of Inyo County-Death Valley National Park-Eastern Mojave Desert-Morongo Basin-Cadiz Basin-San Bernardino County-Upper Colorado River Valley-Esmeralda and Central Nye County-Lincoln County-Northeast Clark County-Western Clark and Southern Nye County- Sheep Range-Spring Mountains-Red Rock Canyon-Las Vegas Valley-Lake Mead National Recreation Area-Southern Clark County- Including the cities of Western Grand Canyon, Rachel, Laughlin, Lake Havasu City, Colorado City, Goldfield, Hiko, Yucca Valley, Indian Springs, Silver Peak, Yucca, Independence, Henderson, Hayford Pk, Vidal Junction, Mitchell Caverns, Moapa, Amargosa Valley, Baker, Pahrump, Lone Pine, Morongo Valley, Beatty, Furnace Creek, Needles, Alamo, Red Rock Canyon, Desert Rock, Wikieup, Dolan Springs, North Las Vegas, Cal-Nev-Ari, Bullhead City, Twentynine Palms, Golden Valley, Searchlight, Stovepipe Wells, Primm, Mt Trumbull, Oatman, Westgard Pass, Bristlecone Pine, Topock, Aspendell, Overton, Dyer, Panaca, Boulder City, The Town Of Mt Charleston, Mountain Pass, Tuweep, Caliente, Hoover Dam, Mohave Valley, Pipe Spring National Monument, Pioche, Olancha, Valentine, Las Vegas, Mesquite, Whitney Portal, Desert Hills, Kingman, Bishop, and Shoshone 804 PM MST Sat Jul 31 2021 /804 PM PDT Sat Jul 31 2021/ ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for portions of northwest Arizona, southeast California and Nevada has been cancelled. Thunderstorm activity has diminished and flash flooding is not expected for the remainder of the watch period, therefore, the watch has been cancelled. The Flash Flood Watch is cancelled. Flooding is no longer expected to pose a threat. Please continue to heed remaining road closures. $$ DB
The office that day
Everything else NWS Las Vegas, NV issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 29, 12:19 PM MST | Flash Flood Warning | VEF | Lincoln | 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.