Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 42, NWS Phoenix, AZ
NWS Phoenix, AZ issued this severe thunderstorm warning at Jul 30, 2021, 6:51 PM MST for Yuma County, Arizona. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 30, 2021, 6:51 PM MST (01:51 UTC)
- Expired
- Jul 30, 2021, 7:29 PM MST
- In force
- 38 min
- Issued by
- NWS Phoenix, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Yuma County, AZ
The radar
The Yuma radar (KYUX), 66 km from the middle of the area, began a volume at 01:51 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
Phoenix, AZ (KPSR), launched 00:00Z, 1.9 hours before the alert went out and 206 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
- 50 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 3059 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
062 WUUS55 KPSR 310151 SVRPSR AZC027-310300- /O.NEW.KPSR.SV.W.0042.210731T0151Z-210731T0300Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Phoenix AZ 651 PM MST Fri Jul 30 2021 The National Weather Service in Phoenix has issued a * Severe Thunderstorm Warning for... Central Yuma County in southwestern Arizona... * Until 800 PM MST. * At 651 PM MST, a severe thunderstorm was located near Tacna, or 22 miles east of Fortuna Foothills, moving northeast at 5 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Wellton, Tacna, Tyson and Roll. * This includes AZ Interstate 8 between mile markers 26 and 49. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3260 11394 3263 11424 3290 11419 3283 11371 TIME...MOT...LOC 0151Z 207DEG 5KT 3270 11403 HAIL...0.75IN WIND...60MPH $$ Hirsch
1 follow-up statement
522
WWUS55 KPSR 310229
SVSPSR
Severe Weather Statement
National Weather Service Phoenix AZ
729 PM MST Fri Jul 30 2021
AZC027-310238-
/O.CAN.KPSR.SV.W.0042.000000T0000Z-210731T0300Z/
Yuma AZ-
729 PM MST Fri Jul 30 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL YUMA COUNTY IS
CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and has exited the warned area. Therefore, the warning has
been cancelled. However heavy rain is still possible with this
thunderstorm.
LAT...LON 3260 11394 3263 11424 3290 11419 3283 11371
TIME...MOT...LOC 0224Z 207DEG 5KT 3275 11400
$$
HirschThe office that day
Everything else NWS Phoenix, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 5:04 PM MST | Dust Storm Advisory | PSR | Yuma | 41 min |
| Jul 30, 5:29 PM MST | Severe Thunderstorm Warning | PSR | Yuma | 46 min |
| Jul 30, 5:39 PM MST | Areal Flood Advisory | PSR | Yuma | 3 hr |
| Jul 30, 5:44 PM MST | Flash Flood Warning | PSR | Yuma | 4 hr |
| Jul 30, 5:59 PM MST | Dust Storm Warning | PSR | Yuma | 45 min |
| Jul 30, 6:06 PM MST | Flash Flood Warning | PSR | Yuma | 4 hr |
| Jul 30, 7:06 PM MST | Special Weather Statement | PSR | Pinal | 24 min |
| Jul 30, 7:25 PM MST | Flash Flood Warning | PSR | Yuma | 3 hr |
| Jul 30, 7:32 PM MST | Areal Flood Advisory | PSR | Yuma | 3 hr |
| Jul 30, 7:51 PM MST | Special Weather Statement | PSR | Yuma | 69 min |
| Jul 30, 8:02 PM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 30, 8:29 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 72 min |
| Jul 30, 8:44 PM MST | Severe Thunderstorm Warning | PSR | La Paz, Maricopa | 61 min |
| Jul 30, 9:17 PM MST | Flash Flood Warning | PSR | Maricopa | 2 hr |
| Jul 30, 9:40 PM MST | Special Weather Statement | PSR | Maricopa | 65 min |
| Jul 30, 10:24 PM MST | Dust Storm Advisory | PSR | Maricopa, Pinal | 43 min |
| Jul 30, 10:37 PM MST | Special Weather Statement | PSR | Maricopa | 23 min |
| Jul 30, 10:45 PM MST | Special Weather Statement | PSR | 45 min | |
| Jul 30, 11:54 PM MST | Special Weather Statement | PSR | Maricopa | 51 min |
| Jul 31, 12:37 AM MST | Areal Flood Advisory | PSR | Maricopa | 3 hr |
| Jul 31, 1:34 AM MST | Areal Flood Advisory | PSR | Maricopa | 4 hr |
| Jul 31, 1:58 AM MST | Areal Flood Advisory | PSR | Maricopa, Pinal | 4 hr |
| Jul 31, 3:39 AM MST | Areal Flood Advisory | PSR | La Paz | 4 hr |
| Jul 31, 2:23 PM MST | Special Weather Statement | PSR | La Paz | 37 min |
| Jul 31, 3:03 PM MST | Special Weather Statement | PSR | Gila | 27 min |
| Jul 31, 3:18 PM MST | Special Weather Statement | PSR | La Paz | 27 min |
| Jul 31, 3:31 PM MST | Flash Flood Warning | PSR | Gila | 4 hr |
| Jul 31, 3:44 PM MST | Special Weather Statement | PSR | La Paz | 31 min |
| Jul 31, 3:55 PM MST | Areal Flood Advisory | PSR | La Paz | 3 hr |
Nearby
Severe Thunderstorm Warnings in Arizona, 2021Every severe thunderstorm warning 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.