Alert archive / Arizona / Special Weather Statements in 2021
Special Weather Statement, NWS Tucson, AZ
NWS Tucson, AZ issued this special weather statement at Aug 2, 2021, 4:47 PM MST. It was in force for 43 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 2, 2021, 4:47 PM MST (23:47 UTC)
- Expired
- Aug 2, 2021, 5:30 PM MST
- In force
- 43 min
- Issued by
- NWS Tucson, AZ
The radar
The Tucson radar (KEMX), 145 km from the middle of the area, began a volume at 23:48 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, 11.8 hours before the alert went out and 158 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
- 719 J/kg
- Mixed-layer CIN
- -138 J/kg
- Mixed-layer LCL
- 2053 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
140
WWUS85 KTWC 022347
SPSTWC
Special Weather Statement
National Weather Service Tucson AZ
447 PM MST Mon Aug 2 2021
AZZ508-509-030030-
Upper Gila River and Aravaipa Valleys including
Clifton/Safford-Eastern Cochise County Below 5000 Feet including
Douglas/Willcox-
447 PM MST Mon Aug 2 2021
...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN GRAHAM...
NORTHEASTERN COCHISE AND SOUTHEASTERN GREENLEE COUNTIES UNTIL 530 PM
MST...
At 447 PM MST, Doppler radar was tracking a strong thunderstorm 18
miles northeast of Bowie, or 21 miles southwest of Virden, moving
southeast at 15 mph.
Winds in excess of 45 mph will be possible with this storm.
Locations impacted include...
San Simon.
LAT...LON 3223 10935 3270 10949 3281 10924 3260 10905
3230 10905
TIME...MOT...LOC 2347Z 329DEG 13KT 3257 10934
$$
AHThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 5:23 PM MST | Special Weather Statement | TWC | 52 min | |
| Aug 1, 6:03 PM MST | Flash Flood Warning | TWC | Graham | 3 hr |
| Aug 1, 6:35 PM MST | Areal Flood Advisory | TWC | Graham | 3 hr |
| Aug 1, 6:44 PM MST | Special Weather Statement | TWC | 31 min | |
| Aug 1, 8:28 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Aug 1, 8:40 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Aug 2, 12:43 PM MST | Special Weather Statement | TWC | Greenlee | 47 min |
| Aug 2, 1:27 PM MST | Special Weather Statement | TWC | Greenlee | 48 min |
| Aug 2, 2:26 PM MST | Excessive Heat Warning | TWC | Graham, Greenlee, Pima, Pinal | 54 hr |
| Aug 2, 2:43 PM MST | Special Weather Statement | TWC | Cochise | 47 min |
| Aug 2, 2:50 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 40 min |
| Aug 2, 2:51 PM MST | Areal Flood Advisory | TWC | Cochise | 114 min |
| Aug 2, 3:20 PM MST | Areal Flood Advisory | TWC | Santa Cruz | 115 min |
| Aug 2, 4:04 PM MST | Special Weather Statement | TWC | Graham | 56 min |
| Aug 2, 4:22 PM MST | Areal Flood Advisory | TWC | Cochise | 113 min |
Nearby
Special Weather Statements in Arizona, 2021Every special weather statement 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.