Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 14, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 16, 2012, 8:09 PM MST for Pima County, Arizona. It was in force for 111 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 16, 2012, 8:09 PM MST (03:09 UTC)
- Expired
- Jul 16, 2012, 10:00 PM MST
- In force
- 111 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 38 km from the middle of the area, began a volume at 03:10 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, 3.2 hours before the alert went out and 2 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
- 646 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 2318 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
401 WGUS55 KTWC 170309 FFWTWC AZC019-170500- /O.NEW.KTWC.FF.W.0014.120717T0309Z-120717T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 809 PM MST MON JUL 16 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... INCLUDING THE SOUTHERN PORTIONS OF THE TUCSON METRO AREA * UNTIL 1000 PM MST * AT 800 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER THE SOUTHERN PORTIONS OF THE TUCSON METRO AREA HAS PRODUCED VERY HEAVY RAINFALL. RADAR ESTIMATED THAT BETWEEN 1.00 AND 1.50 INCHES HAD FALLEN ALONG VALENCIA NEAR THE TUCSON INTERNATIONAL AIRPORT...AND AROUND 1.00 TO 1.25 INCHES NEAR INTERSTATE 10 BETWEEN VALENCIA AND WILMOT ROAD. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DAVIS-MONTHAN AIR FORCE BASE. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3216 11099 3228 11082 3211 11068 3203 11102 $$
2 follow-up statements
933 WGUS75 KTWC 170441 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 941 PM MST MON JUL 16 2012 AZC019-170500- /O.CON.KTWC.FF.W.0014.000000T0000Z-120717T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 941 PM MST MON JUL 16 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1000 PM MST FOR EAST CENTRAL PIMA COUNTY... ALTHOUGH THE STORMS HAVE SINCE DISSIPATED...WEATHER SERVICE RADAR ESTIMATED THAT BETWEEN 1.00 AND 1.50 INCHES HAD FALLEN ALONG VALENCIA NEAR THE TUCSON INTERNATIONAL AIRPORT...AND AROUND 1.00 TO 1.25 INCHES NEAR INTERSTATE 10 BETWEEN VALENCIA AND WILMOT ROADS. WILMOT ROAD IS CLOSED BETWEEN INTERSTATE 10 AND HERMANS ROAD DUE TO FLOODING IN THE ROADWAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. && LAT...LON 3216 11099 3228 11082 3211 11068 3203 11102 $$
970 WGUS75 KTWC 170500 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1000 PM MST MON JUL 16 2012 AZC019-170510- /O.EXP.KTWC.FF.W.0014.000000T0000Z-120717T0500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 1000 PM MST MON JUL 16 2012 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR EAST CENTRAL PIMA COUNTY... ALTHOUGH SIGNIFICANT PONDING OF WATER IS LIKELY TO PERSIST...THE THREAT OF FLASH FLOODING HAS SUBSIDED. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE AT 10 PM MST. LAT...LON 3216 11099 3228 11082 3211 11068 3203 11102 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:07 PM MST | Areal Flood Advisory | TWC | Cochise | 83 min |
| Jul 16, 7:19 PM MST | Flash Flood Warning | TWC | Cochise | 116 min |
| Jul 16, 7:54 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
| Jul 16, 9:22 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jul 17, 2:05 PM MST | Flash Flood Warning | TWC | Cochise, Santa Cruz | 55 min |
| Jul 17, 3:51 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
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.