Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 167, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 28, 2021, 7:14 PM MST for Pima County, Arizona. It was in force for 61 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
- Aug 28, 2021, 7:14 PM MST (02:14 UTC)
- Expired
- Aug 28, 2021, 8:15 PM MST
- In force
- 61 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Pima County, AZ
The radar
The Phoenix radar (KIWA), 177 km from the middle of the area, began a volume at 02:15 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
Phoenix, AZ (KPSR), launched 00:00Z, 2.2 hours before the alert went out and 176 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
- 645 J/kg
- Mixed-layer CIN
- -152 J/kg
- Mixed-layer LCL
- 3094 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- -11 m²/s²
- 0-3 km storm-relative helicity
- 21 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
895 WUUS55 KTWC 290214 SVRTWC AZC019-290315- /O.NEW.KTWC.SV.W.0167.210829T0214Z-210829T0315Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Tucson AZ 714 PM MST Sat Aug 28 2021 The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... West central Pima County in southeastern Arizona... * Until 815 PM MST. * At 713 PM MST, a group of severe thunderstorms was located 8 miles south of Organ Pipe Cactus National Monument, or 31 miles south of Ajo, moving southwest at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Organ Pipe Cactus National Monument, Ali Chugk, Pia Oik and Lukeville. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Damaging winds and frequent cloud to ground lightning is occurring with this storm. Move indoors immediately. Lightning is one of nature's leading killers. Remember, if you can hear thunder, you are close enough to be struck by lightning. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3216 11302 3198 11236 3177 11244 3198 11316 TIME...MOT...LOC 0213Z 058DEG 25KT 3192 11281 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ Cerniglia
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 5:03 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 117 min |
| Aug 28, 5:12 PM MST | Special Weather Statement | TWC | Pinal | 48 min |
| Aug 28, 5:20 PM MST | Severe Thunderstorm Warning | TWC | Pinal | 40 min |
| Aug 28, 6:31 PM MST | Severe Thunderstorm Warning | TWC | Pima | 44 min |
| Aug 28, 6:47 PM MST | Special Weather Statement | TWC | Pinal | 43 min |
| Aug 28, 7:01 PM MST | Areal Flood Warning | TWC | Pima, Pinal | 3 hr |
| Aug 28, 7:41 PM MST | Flash Flood Warning | TWC | Pima | 109 min |
| Aug 28, 8:03 PM MST | Severe Thunderstorm Warning | TWC | Pima | 57 min |
| Aug 28, 8:25 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Aug 29, 2:32 PM MST | Special Weather Statement | TWC | Cochise | 43 min |
| Aug 29, 3:53 PM MST | Special Weather Statement | TWC | Pima | 37 min |
| Aug 29, 4:23 PM MST | Areal Flood Advisory | TWC | Pima | 112 min |
| Aug 29, 4:46 PM MST | Special Weather Statement | TWC | Pinal | 59 min |
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.