Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 63, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 6, 2012, 2:50 PM MST for Pima County, Pinal 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, 2:50 PM MST (21:50 UTC)
- Expired
- Sep 6, 2012, 5:45 PM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Pima County, AZ, Pinal County, AZ
The radar
The Phoenix radar (KIWA), 104 km from the middle of the area, began a volume at 21:49 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, 9.8 hours before the alert went out and 109 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
- 888 J/kg
- Mixed-layer CIN
- -136 J/kg
- Mixed-layer LCL
- 1475 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
314
WGUS55 KTWC 062150
FFWTWC
AZC019-021-070045-
/O.NEW.KTWC.FF.W.0063.120906T2150Z-120907T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
250 PM MST THU SEP 6 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
SOUTHWESTERN PINAL COUNTY IN SOUTH CENTRAL ARIZONA...
* UNTIL 545 PM MST
* AT 238 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM THUNDERSTORMS NEAR HICKIWAN...VENTANA AND
WEST OF COVERED WELLS.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VENTANA...
VAYA CHIN...KOHATK...HICKIWAN AND COCKLEBUR
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES
AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF
CREEKS AND STREAMS.
&&
LAT...LON 3198 11248 3250 11258 3250 11220 3267 11220
3268 11215 3271 11215 3272 11205 3276 11204
3277 11189 3193 11220
$$
KD2 follow-up statements
799
WGUS75 KTWC 062309
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
409 PM MST THU SEP 6 2012
AZC019-021-070045-
/O.CON.KTWC.FF.W.0063.000000T0000Z-120907T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
409 PM MST THU SEP 6 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 545 PM MST FOR
SOUTHWESTERN PINAL AND CENTRAL PIMA COUNTIES...
AT 405 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE THUNDERSTORMS PRODUCING FLASH FLOODING APPROACHING
HICKIWAN AND WEST OF COCKLEBUR. THE HEAVIEST RAIN FELL EARLIER
THIS AFTERNOON IN THE VAYA CHIN AREA AND NORTHWEST OF KOHATK.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VENTANA...
HICKIWAN...KOHATK AND COCKLEBUR. IN ADDITION...WASHES WILL CONTINUE
TO RUN RAPIDLY THIS AFTERNOON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3198 11248 3250 11258 3250 11220 3267 11220
3268 11215 3271 11215 3272 11205 3276 11204
3277 11189 3193 11220
$$
KD411
WGUS75 KTWC 070036
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
536 PM MST THU SEP 6 2012
AZC019-021-070046-
/O.EXP.KTWC.FF.W.0063.000000T0000Z-120907T0045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
536 PM MST THU SEP 6 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 545 PM MST FOR SOUTHWESTERN
PINAL AND CENTRAL PIMA COUNTIES...
ALTHOUGH AMPLE TIME HAS ELAPSED WHERE FLASH FLOODING IS NO LONGER A
THREAT...SIGNIFICANT WATER FLOWING IN NORMALLY DRY WASHES...ROADWAY
DIPS AND OTHER LOW LYING AREAS IS STILL LIKELY TO RESULT IN MINOR
FLOODING ISSUES.
A SMALL STREAM FLOOD ADVISORY WILL REMAIN IN EFFECT UNTIL 1000 PM
MST FOR SOUTHERN PINAL...PIMA...SANTA CRUZ AND EXTREME SOUTHWESTERN
COCHISE COUNTIES.
LAT...LON 3198 11248 3250 11258 3250 11220 3267 11220
3268 11215 3271 11215 3272 11205 3276 11204
3277 11189 3193 11220
$$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, 12:55 PM MST | Flash Flood Warning | TWC | Pima | 3 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, 2:55 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.