Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 57, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 6, 2012, 12:55 PM MST for Pima County, Arizona. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 6, 2012, 12:55 PM MST (19:55 UTC)
- Expired
- Sep 6, 2012, 4:00 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 103 km from the middle of the area, began a volume at 19:57 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, 7.9 hours before the alert went out and 87 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
- 1314 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 1026 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
283 WGUS55 KTWC 061955 FFWTWC AZC019-062300- /O.NEW.KTWC.FF.W.0057.120906T1955Z-120906T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 1255 PM MST THU SEP 6 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA... THIS INCLUDES THE CITY OF SELLS... * UNTIL 400 PM MST * AT 1248 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM A THUNDERSTORM OVER FRESNAL CANYON. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TOPAWA... LITTLE TUCSON...AND FRESNAL CANYON. 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. TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN TUCSON. && LAT...LON 3194 11155 3148 11150 3164 11203 3194 11192 $$ KD
2 follow-up statements
884 WGUS75 KTWC 062132 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 232 PM MST THU SEP 6 2012 AZC019-062300- /O.CON.KTWC.FF.W.0057.000000T0000Z-120906T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 232 PM MST THU SEP 6 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR SOUTH CENTRAL PIMA COUNTY... AT 224 PM MST...THE HEAVIEST RAIN HAD ENDED OVER SOUTH CENTRAL PIMA COUNTY...BUT RUNOFF INTO WASHES AND STREAM BEDS WILL CONTINUE FROM HEAVY RAIN THAT FELL EARLIER. A RAIN GAUGE AT FRESNAL CANYON SHOWED OVER AN ONE AND ONE HALF INCHES OF RAIN HAD FALLEN. ELEVATED FLOWS IN FRESNAL WASH WILL CAUSE FLOODING NEAR TOPAWA. HEAVY RAIN ALSO FELL WEST OF SAN MIGUEL WHICH WILL CAUSE RISES IN VAMORI WASH. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. && LAT...LON 3194 11155 3148 11150 3164 11203 3194 11192 $$ KD
101 WGUS75 KTWC 062303 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 403 PM MST THU SEP 6 2012 AZC019-062311- /O.EXP.KTWC.FF.W.0057.000000T0000Z-120906T2300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ PIMA AZ- 403 PM MST THU SEP 6 2012 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTH CENTRAL PIMA COUNTY... THIS WARNING HAD BEEN IN EFFECT UNTIL 400 PM MST. THE HEAVIEST RAIN HAD ENDED IN THE WARNED AREA AROUND SOUTH KOMELIK...BUT RUNOFF FROM EARLIER RAIN WILL CONTINUE INTO SMALL STREAMS LATE THIS AFTERNOON INTO THIS EVENING. THIS INCLUDES VAMORI WASH. OTHER FLASH FLOOD WARNINGS REMAIN IN EFFECT LATE THIS AFTERNOON FOR WESTERN PORTIONS OF THE TOHONO O'ODHAM NATION. A SMALL STREAM FLOOD ADVISORY WILL BE IN EFFECT FOR ALL OF WESTERN AND CENTRAL PIMA COUNTY UNTIL 10 PM MST. LAT...LON 3194 11155 3148 11150 3164 11203 3194 11192 $$ KD
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 5, 5:33 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 5, 6:30 PM MST | Special Weather Statement | TWC | Greenlee | 30 min |
| Sep 6, 12:13 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Sep 6, 1:19 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Santa Cruz | 116 min |
| Sep 6, 1:39 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Sep 6, 1:48 PM MST | Flash Flood Warning | TWC | Pima | 3 hr |
| Sep 6, 2:06 PM MST | Flash Flood Warning | TWC | Pima | 84 min |
| Sep 6, 2:30 PM MST | Flash Flood Warning | TWC | Pima, Santa Cruz | 2 hr |
| Sep 6, 2:48 PM MST | Flash Flood Warning | TWC | Pima | 117 min |
| Sep 6, 2:50 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 3 hr |
| Sep 6, 2:55 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 35 min |
| Sep 6, 3:04 PM MST | Flash Flood Warning | TWC | Santa Cruz | 116 min |
| Sep 6, 3:17 PM MST | Severe Thunderstorm Warning | TWC | Pima | 24 min |
| Sep 6, 3:36 PM MST | Flash Flood Warning | TWC | Pima | 114 min |
| Sep 6, 4:05 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Pinal, Santa Cruz | 6 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.