Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 66, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 6, 2012, 5:15 PM MST for Pinal County, Arizona. It was in force for 90 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
- Sep 6, 2012, 5:15 PM MST (00:15 UTC)
- Expired
- Sep 6, 2012, 6:45 PM MST
- In force
- 90 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pinal County, AZ
The radar
The Phoenix radar (KIWA), 61 km from the middle of the area, began a volume at 00:16 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, 0.3 hours before the alert went out and 89 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
- 777 J/kg
- Mixed-layer CIN
- -45 J/kg
- Mixed-layer LCL
- 1061 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
233
WGUS55 KTWC 070015
FFWTWC
AZC021-070145-
/O.NEW.KTWC.FF.W.0066.120907T0015Z-120907T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
515 PM MST THU SEP 6 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL PINAL COUNTY IN SOUTH CENTRAL ARIZONA...
* UNTIL 645 PM MST
* AT 504 PM MST...WEATHER RADAR INDICATED THAT 1.00 TO 2.00 INCHES
OF RAIN HAS FALLEN IN THE PAST HALF HOUR SOUTHEAST OF FLASH
FLOODING WAS REPORTED FROM A THUNDERSTORM 10 MILES SOUTHEAST OF
FLORENCE IN CENTRAL PINAL COUNTY. RUNOFF FROM THIS STORM WILL CAUSE
FLASH FLOODING...ESPECIALLY IN COTTONWOOD WASH AND OTHER WASHES THAT
DRAIN INTO THE TOWN OF CACTUS FOREST.
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 3292 11096 3289 11118 3279 11120 3293 11140
3302 11129 3310 11116
$$2 follow-up statements
584
WGUS75 KTWC 070100
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
600 PM MST THU SEP 6 2012
AZC021-070145-
/O.CON.KTWC.FF.W.0066.000000T0000Z-120907T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PINAL AZ-
600 PM MST THU SEP 6 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 PM MST FOR
CENTRAL PINAL COUNTY...
AT 551 PM MST...ALTHOUGH LIGHT TO MODERATE RAIN IS FALLING OVER THE
WARNING AREA...WEATHER RADAR INDICATED THAT 1.00 TO 2.00 INCHES OF
RAIN HAS FALLEN 10 MILES SOUTHEAST OF FLORENCE IN CENTRAL PINAL
COUNTY. RUNOFF FROM THIS STORM WILL CAUSE FLASH FLOODING ESPECIALLY
IN COTTONWOOD WASH...TOM MIX WASH...CHINA WASH...DONNELLY WASH AND
BOX O WASH AND OTHER SMALL WASHES THAT DRAIN INTO THE TOWN OF CACTUS
FOREST.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...
GILA RIVER...COTTONWOOD WASH...TOM MIX WASH...CHINA WASH...DONNELLY
WASH AND BOX O WASH.
&&
LAT...LON 3292 11096 3289 11118 3279 11120 3293 11140
3302 11129 3310 11116
$$059
WGUS75 KTWC 070138
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
638 PM MST THU SEP 6 2012
AZC021-070146-
/O.EXP.KTWC.FF.W.0066.000000T0000Z-120907T0145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PINAL AZ-
638 PM MST THU SEP 6 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 PM MST FOR CENTRAL
PINAL COUNTY...
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.
HOWEVER...RAINFALL RUNOFF WILL CONTINUE TO RESULT IN RUNNING
WASHES...ESPECIALLY COTTONWOOD WASH...TOM MIX WASH...CHINA
WASH...DONNELLY WASH AND BOX O WASH AND OTHER SMALL WASHES THAT
DRAIN INTO THE TOWN OF CACTUS FOREST.
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 3292 11096 3289 11118 3279 11120 3293 11140
3302 11129 3310 11116
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 6, 5:37 PM MST | Severe Thunderstorm Warning | TWC | Greenlee | 38 min |
| Sep 6, 5:54 PM MST | Flash Flood Warning | TWC | Greenlee | 111 min |
| Sep 6, 8:48 PM MST | Flash Flood Warning | TWC | Graham | 117 min |
| Sep 6, 9:14 PM MST | Special Weather Statement | TWC | Graham | 46 min |
| Sep 7, 4:50 AM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 7, 5:47 AM MST | Flash Flood Watch | TWC | Cochise, Graham, Greenlee, Pima, Pinal, Santa Cruz | 12 hr |
| Sep 7, 6:13 AM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 7, 6:21 AM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Sep 7, 7:44 AM MST | Areal Flood Warning | TWC | Pima | 6 hr |
| Sep 7, 12:55 PM MST | Flash Flood Warning | TWC | Cochise, Santa Cruz | 110 min |
| Sep 7, 1:08 PM MST | Flash Flood Warning | TWC | Cochise | 112 min |
| Sep 7, 1:58 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Sep 7, 2:45 PM MST | Areal Flood Advisory | TWC | Cochise | 90 min |
| Sep 7, 3:35 PM MST | Areal Flood Advisory | TWC | Cochise | 115 min |
| Sep 7, 3:47 PM MST | Flash Flood Warning | TWC | Greenlee | 118 min |
| Sep 7, 4:52 PM MST | Special Weather Statement | TWC | Graham | 23 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.