Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 18, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 22, 2012, 1:56 PM MST for Pima County, Arizona. It was in force for 92 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 22, 2012, 1:56 PM MST (20:56 UTC)
- Expired
- Jul 22, 2012, 3:28 PM MST
- In force
- 92 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Phoenix radar (KIWA), 169 km from the middle of the area, began a volume at 20:59 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
Phoenix, AZ (KPSR), launched 12:00Z, 8.9 hours before the alert went out and 167 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
- 151 J/kg
- Mixed-layer CIN
- -269 J/kg
- Mixed-layer LCL
- 1950 m above ground
- 0-6 km bulk shear
- 5 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 30 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
050 WGUS55 KTWC 222056 FFWTWC AZC019-222300- /O.NEW.KTWC.FF.W.0018.120722T2056Z-120722T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 156 PM MST SUN JUL 22 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... WEST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... * UNTIL 400 PM MST * AT 148 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM GENERATING VERY HEAVY RAINFALL ALONG HIGHWAY 85 BETWEEN WHY AND LUKEVILLE. RAINFALL AMOUNTS IN EXCESS OF 2 INCHES WERE LIKELY GENERATING FLASH FLOODING. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KUAKATCH AND GUNSIGHT PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...GROWLER WASH...KUAKATCH WASH...GU VO WASH...GUNSIGHT WASH...SIKORT CHUAPO WASH AND PIA OIK WASH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS AND ROADS...AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3217 11291 3223 11264 3197 11265 3195 11289 $$ MEYER
2 follow-up statements
391 WGUS75 KTWC 222202 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 302 PM MST SUN JUL 22 2012 AZC019-222300- /O.CON.KTWC.FF.W.0018.000000T0000Z-120722T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 302 PM MST SUN JUL 22 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR WEST CENTRAL PIMA COUNTY... AT 255 PM MST...SHOWERS AND THUNDERSTORMS HAD WEAKENED CONSIDERABLY NEAR HIGHWAY 85 BETWEEN WHY AND LUKEVILLE. HEAVY RUNOFF FROM EARLIER RAINFALL AMOUNTS IN EXCESS OF 2 INCHES WILL CONTINUE. STRONG THUNDERSTORMS WERE ALSO NOTED NORTHEAST AND EAST OF THE WARNING AREA OVER PORTIONS OF THE TOHONO O'ODHAM NATION WEST OF SELLS. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO KUAKATCH AND GUNSIGHT PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...GROWLER WASH...KUAKATCH WASH...GU VO WASH...GUNSIGHT WASH...SIKORT CHUAPO WASH AND PIA OIK WASH. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS AND ROADS...AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3217 11291 3223 11264 3197 11265 3195 11289 $$ MEYER
997 WGUS75 KTWC 222228 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 328 PM MST SUN JUL 22 2012 AZC019-222237- /O.CAN.KTWC.FF.W.0018.000000T0000Z-120722T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 328 PM MST SUN JUL 22 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR WEST CENTRAL PIMA COUNTY... WITH LITTLE ADDITIONAL RAINFALL OVER THE PAST 45 MINUTES...THE FLASH FLOOD WARNING HAS BEEN CANCELLED. HEAVY FLOW WILL CONTINUE INTO THE EARLY EVENING HOURS IN AREA WASHES AROUND HIGHWAY 85...INCLUDING GROWLER WASH. LAT...LON 3217 11291 3223 11264 3197 11265 3195 11289 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 6:05 PM MST | Severe Thunderstorm Warning | TWC | Pima | 40 min |
| Jul 21, 6:17 PM MST | Areal Flood Advisory | TWC | Pima | 118 min |
| Jul 22, 11:44 AM MST | Special Weather Statement | TWC | Santa Cruz | 31 min |
| Jul 22, 12:27 PM MST | Special Weather Statement | TWC | Pinal | 48 min |
| Jul 22, 12:40 PM MST | Special Weather Statement | TWC | Santa Cruz | 50 min |
| Jul 22, 12:52 PM MST | Severe Thunderstorm Warning | TWC | Pima | 23 min |
| Jul 22, 1:15 PM MST | Severe Thunderstorm Warning | TWC | Pima | 60 min |
| Jul 22, 1:30 PM MST | Dust Storm Warning | TWC | Pima, Pinal | 3 hr |
| Jul 22, 1:36 PM MST | Special Weather Statement | TWC | 39 min | |
| Jul 22, 2:39 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
Nearby
Flash Flood Warnings in Arizona, 2012Every flash flood warning in 2012
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.