Alert archive / Arizona / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 62, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Jul 15, 2021, 2:19 PM MST for Cochise County, Graham County, Arizona. It was in force for 41 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 15, 2021, 2:19 PM MST (21:19 UTC)
- Expired
- Jul 15, 2021, 3:00 PM MST
- In force
- 41 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cochise County, AZ, Graham County, AZ
The radar
The Tucson radar (KEMX), 80 km from the middle of the area, began a volume at 21:20 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
Tuscon, AZ (KTUS), launched 12:00Z, 9.3 hours before the alert went out and 89 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
- 1024 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1408 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
299 WUUS55 KTWC 152119 SVRTWC AZC003-009-152200- /O.NEW.KTWC.SV.W.0062.210715T2119Z-210715T2200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Tucson AZ 219 PM MST Thu Jul 15 2021 The National Weather Service in Tucson has issued a * Severe Thunderstorm Warning for... South central Graham County in southeastern Arizona... Northwestern Cochise County in southeastern Arizona... * Until 300 PM MST. * At 219 PM MST, a severe thunderstorm was located 17 miles northwest of Willcox, moving south at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * Locations impacted include... Willcox. This includes the following highways... Interstate 10 between mile markers 329 and 341. Route 186 between mile markers 327 and 329. Route 191 between mile markers 65 and 66. 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 3252 11005 3252 10990 3214 10979 3215 11015 TIME...MOT...LOC 2119Z 000DEG 17KT 3246 10999 HAIL...0.75IN WIND...60MPH $$ Carpenter
2 follow-up statements
303 WWUS55 KTWC 152138 SVSTWC Severe Weather Statement National Weather Service Tucson AZ 238 PM MST Thu Jul 15 2021 AZC003-009-152200- /O.CON.KTWC.SV.W.0062.000000T0000Z-210715T2200Z/ Graham-Cochise- 238 PM MST Thu Jul 15 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM MST FOR SOUTH CENTRAL GRAHAM AND NORTHWESTERN COCHISE COUNTIES... At 238 PM MST, a severe thunderstorm was located 12 miles northwest of Willcox, moving south at 20 mph. HAZARD...60 mph wind gusts and penny size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. Locations impacted include... Willcox. This includes the following highways... Interstate 10 between mile markers 329 and 341. Route 186 between mile markers 327 and 328. Route 191 between mile markers 65 and 66. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with this storm, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3248 11005 3248 10989 3214 10979 3215 11015 TIME...MOT...LOC 2138Z 000DEG 17KT 3237 10999 HAIL...0.75IN WIND...60MPH $$ Carpenter
577
WWUS55 KTWC 152157
SVSTWC
Severe Weather Statement
National Weather Service Tucson AZ
257 PM MST Thu Jul 15 2021
AZC003-009-152206-
/O.EXP.KTWC.SV.W.0062.000000T0000Z-210715T2200Z/
Graham-Cochise-
257 PM MST Thu Jul 15 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GRAHAM AND
NORTHWESTERN COCHISE COUNTIES WILL EXPIRE AT 300 PM MST...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However heavy rain
is still possible with this thunderstorm.
Remember, a Severe Thunderstorm Warning still remains in effect for
Northeastern Cochise County until 330 PM MST.
LAT...LON 3248 11005 3248 10989 3214 10979 3215 11015
TIME...MOT...LOC 2156Z 000DEG 17KT 3229 10999
$$
CarpenterThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 5:33 PM MST | Special Weather Statement | TWC | 27 min | |
| Jul 14, 5:41 PM MST | Special Weather Statement | TWC | 49 min | |
| Jul 15, 6:07 AM MST | Areal Flood Advisory | TWC | Pima | 113 min |
| Jul 15, 6:33 AM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Jul 15, 8:12 AM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Jul 15, 8:32 AM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Jul 15, 8:40 AM MST | Flash Flood Warning | TWC | Pima | 114 min |
| Jul 15, 1:51 PM MST | Areal Flood Advisory | TWC | Cochise, Graham | 3 hr |
| Jul 15, 1:55 PM MST | Special Weather Statement | TWC | Greenlee | 35 min |
| Jul 15, 2:31 PM MST | Areal Flood Advisory | TWC | Cochise | 119 min |
| Jul 15, 2:52 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 38 min |
| Jul 15, 3:15 PM MST | Severe Thunderstorm Warning | TWC | Graham | 45 min |
| Jul 15, 3:30 PM MST | Areal Flood Advisory | TWC | Graham, Greenlee | 3 hr |
| Jul 15, 3:57 PM MST | Severe Thunderstorm Warning | TWC | Graham | 33 min |
| Jul 15, 4:29 PM MST | Flash Flood Warning | TWC | Graham | 2 hr |
| Jul 15, 4:42 PM MST | Special Weather Statement | TWC | Graham | 33 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.