Alert archive / Arizona / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 101, NWS Tucson, AZ
NWS Tucson, AZ issued this severe thunderstorm warning at Aug 21, 2011, 6:56 PM MST for Cochise County, Arizona. It was in force for 34 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 21, 2011, 6:56 PM MST (01:56 UTC)
- Expired
- Aug 21, 2011, 7:30 PM MST
- In force
- 34 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 80 km from the middle of the area, began a volume at 01:59 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 00:00Z, 1.9 hours before the alert went out and 114 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2720 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
400 WUUS55 KTWC 220156 SVRTWC AZC003-220230- /O.NEW.KTWC.SV.W.0101.110822T0156Z-110822T0230Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TUCSON AZ 656 PM MST SUN AUG 21 2011 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA... * UNTIL 730 PM MST * AT 650 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ELFRIDA...MOVING NORTH AT 10 MPH. * THE SEVERE THUNDERSTORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEEK SHELTER INDOORS. EXPECT DAMAGING WINDS IN EXCESS OF 60 MPH... LARGE HAIL...FREQUENT LIGHTNING...AND HEAVY RAIN WITH THIS STORM. && LAT...LON 3180 10991 3178 10959 3162 10966 3163 10996 TIME...MOT...LOC 0156Z 200DEG 8KT 3168 10973 $$
1 follow-up statement
163 WWUS55 KTWC 220227 SVSTWC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 727 PM MST SUN AUG 21 2011 AZC003-220235- /O.EXP.KTWC.SV.W.0101.000000T0000Z-110822T0230Z/ COCHISE AZ- 727 PM MST SUN AUG 21 2011 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL COCHISE COUNTY WILL EXPIRE AT 730 PM MST... DOPPLER RADAR INDICATED THAT THE THUNDERSTORM NEAR ELFRIDA IS NO LONGER SEVERE. BRIEF HEAVY RAIN AND WIND GUSTS TO 40 MPH ARE STILL POSSIBLE WITH THIS STORM THROUGH 740 PM MST. LAT...LON 3180 10991 3178 10959 3162 10966 3163 10996 TIME...MOT...LOC 0225Z 200DEG 8KT 3174 10970 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 5:07 PM MST | Areal Flood Advisory | TWC | Pima | 83 min |
| Aug 21, 7:08 PM MST | Areal Flood Advisory | TWC | Cochise | 82 min |
| Aug 22, 1:41 PM MST | Heat Advisory | TWC | Pima, Pinal | 29 hr |
| Aug 22, 3:00 PM MST | Severe Thunderstorm Warning | TWC | Pima, Santa Cruz | 19 min |
| Aug 22, 3:48 PM MST | Special Weather Statement | TWC | Pima | 27 min |
| Aug 22, 4:35 PM MST | Areal Flood Advisory | TWC | Pima | 85 min |
Nearby
Severe Thunderstorm Warnings in Arizona, 2011Every severe thunderstorm warning in 2011
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.