Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 79, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Sep 10, 2012, 4:13 PM MST for Pima County, Santa Cruz County, Arizona. It was in force for 2 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 10, 2012, 4:13 PM MST (23:13 UTC)
- Expired
- Sep 10, 2012, 6:15 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
Counties Pima County, AZ, Santa Cruz County, AZ
The radar
The Tucson radar (KEMX), 64 km from the middle of the area, began a volume at 23:16 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 12:00Z, 11.2 hours before the alert went out and 51 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
- 773 J/kg
- Mixed-layer CIN
- -124 J/kg
- Mixed-layer LCL
- 1076 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.5
The text
As transmitted, in the capitals the NWS used until 2016.
994
WGUS55 KTWC 102313
FFWTWC
AZC019-023-110115-
/O.NEW.KTWC.FF.W.0079.120910T2313Z-120911T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
413 PM MST MON SEP 10 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EASTERN PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
WESTERN SANTA CRUZ COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 615 PM MST
* AT 406 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAINFALL FROM NUMEROUS THUNDERSTORMS FROM THE RYAN FIELD AREA
SOUTHWARD THROUGH ARIVACA. AN ADDITIONAL ONE TO TWO INCHES OF
RAINFALL IS POSSIBLE WITH SOME OF THESE STORMS. THERE HAS ALREADY
BEEN LOCALLY TWO TO THREE INCHES OF RAINFALL ACROSS THE SOUTHWEST
SIDE OF TUCSON WHICH CONTINUES TO PRODUCE FLASH FLOODING ALONG
VALENCIA ROAD. THIS FLASH FLOOD WARNING EXPANDS AND REPLACES THE
PREVIOUS FLASH FLOOD WARNING EXPIRING AT 415 PM.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN XAVIER
MISSION...SAGUARO NATIONAL PARK WEST AND RYAN FIELD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
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 3194 11149 3236 11130 3221 11101 3195 11101
3138 11119 3149 11152 3174 11148
$$
GL1 follow-up statement
788
WGUS75 KTWC 110117
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
617 PM MST MON SEP 10 2012
AZC019-023-110126-
/O.EXP.KTWC.FF.W.0079.000000T0000Z-120911T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SANTA CRUZ AZ-PIMA AZ-
617 PM MST MON SEP 10 2012
...THE FLASH FLOOD WARNING HAS EXPIRED FOR EASTERN PIMA AND WESTERN
SANTA CRUZ COUNTIES...
AT 615 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR HAD INDICATED
THAT THE THREAT OF HEAVY RAINFALL FOR THE WARNED AREA HAS ENDED AS
SHOWERS AND THUNDERSTORMS HAVE DISSIPATED. THUS...THE WARNING WAS
ALLOWED TO EXPIRE.
LAT...LON 3194 11149 3236 11130 3221 11101 3195 11101
3138 11119 3149 11152 3174 11148
$$
SMRThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 6:49 PM MST | Areal Flood Warning | TWC | Pima | 18 hr |
| Sep 9, 11:55 PM MST | Areal Flood Advisory | TWC | Pima, Pinal | 3 hr |
| Sep 10, 12:46 PM MST | Areal Flood Warning | TWC | Pima | 30 hr |
| Sep 10, 1:27 PM MST | Flash Flood Warning | TWC | Santa Cruz | 2 hr |
| Sep 10, 1:37 PM MST | Areal Flood Advisory | TWC | Cochise, Pima, Santa Cruz | 3 hr |
| Sep 10, 2:24 PM MST | Flash Flood Warning | TWC | Cochise | 111 min |
| Sep 10, 2:29 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Sep 10, 2:41 PM MST | Flash Flood Warning | TWC | Pima | 94 min |
| Sep 10, 3:40 PM MST | Areal Flood Advisory | TWC | Cochise, Graham | 80 min |
| Sep 10, 3:44 PM MST | Special Weather Statement | TWC | Pima | 46 min |
| Sep 10, 3:49 PM MST | Special Weather Statement | TWC | Pima | 41 min |
| Sep 10, 3:53 PM MST | Severe Thunderstorm Warning | TWC | Pima | 37 min |
| Sep 10, 3:54 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Sep 10, 4:24 PM MST | Severe Thunderstorm Warning | TWC | Pima | 36 min |
| Sep 10, 4:56 PM MST | Areal Flood Advisory | TWC | Graham, Pinal | 112 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.