Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 32, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 17, 2012, 12:39 PM MST for Pima County, Arizona. It was in force for 117 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 17, 2012, 12:39 PM MST (19:39 UTC)
- Expired
- Aug 17, 2012, 2:36 PM MST
- In force
- 117 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 23 km from the middle of the area, began a volume at 19:41 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 17, 12:40 PM MST | FLASH FLOOD | 6 W Mescal, AZ | FOUR SEPARATE ACCIDENTS ON INTERSTATE 10 DUE TO FLOODING AND HEAVY RAIN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KDMA), launched 12:00Z, 7.7 hours before the alert went out and 19 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
- 560 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 1232 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
643
WGUS55 KTWC 171939
FFWTWC
AZC019-172230-
/O.NEW.KTWC.FF.W.0032.120817T1939Z-120817T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
1239 PM MST FRI AUG 17 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
* UNTIL 330 PM MST
* AT 1230 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED FLASH FLOODING FROM THUNDERSTORMS ACROSS THE SOUTHEAST
PORTIONS OF THE TUCSON METRO AREA. AN AUTOMATED RAIN GAUGE AT
CIENEGA CREEK AND I-10 HAS RECORDED OVER AN INCH OF RAINFALL WITH
DOPPLER RADAR ESTIMATES IN THAT AREA LOCALLY UP TO TWO INCHES.
THIS WILL CAUSE FLASH FLOODING IN CIENEGA CREEK AND POSSIBLY
PANTANO WASH.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VAIL...
SAGUARO NATIONAL PARK EAST...RITA RANCH AND DAVIS-MONTHAN AIR FORCE
BASE
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 3213 11090 3224 11086 3233 11046 3187 11045
3182 11074
$$
GL2 follow-up statements
358
WGUS75 KTWC 172030
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
130 PM MST FRI AUG 17 2012
AZC019-172230-
/O.CON.KTWC.FF.W.0032.000000T0000Z-120817T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
130 PM MST FRI AUG 17 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 330 PM MST FOR EAST
CENTRAL PIMA COUNTY...
AT 123 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE HEAVY RAINFALL ACROSS THE RINCON MOUNTAINS. THE RAINFALL
THAT HAD PRODUCED OVER AN INCH OF RAINFALL NEAR I-10 AND CIENEGA
CREEK HAS SUBSIDED CONSIDERABLY. HOWEVER...FLASH FLOODING FROM THIS
RAINFALL WILL CONTINUE WITH HEAVY FLOWS IN CIENEGA CREEK AND
POSSIBLY PANTANO WASH.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAGUARO
NATIONAL PARK EAST...RITA RANCH AND DAVIS-MONTHAN AIR FORCE BASE
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
&&
LAT...LON 3213 11090 3224 11086 3233 11046 3187 11045
3182 11074
$$
GL914
WGUS75 KTWC 172136
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
236 PM MST FRI AUG 17 2012
AZC019-172145-
/O.CAN.KTWC.FF.W.0032.000000T0000Z-120817T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
236 PM MST FRI AUG 17 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR EAST CENTRAL PIMA
COUNTY...
RAINFALL HAS ENDED ACROSS THE SOUTHEAST PORTIONS OF THE TUCSON METRO
AREA. IN ADDITION...STREAM GAUGES INDICATE THAT FLOW LEVELS IN THE
PANTANO WASH AND CIENEGA CREEK ARE DROPPING. THUS...THE FLASH FLOOD
WARNING FOR THE SOUTHEAST PORTION OF THE TUCSON METRO AREA WILL BE
CANCELLED.
LAT...LON 3213 11090 3224 11086 3233 11046 3187 11045
3182 11074
$$
GLThe office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 10:01 PM MST | Areal Flood Advisory | TWC | Graham | 119 min |
| Aug 17, 10:23 AM MST | Flash Flood Warning | TWC | Santa Cruz | 3 hr |
| Aug 17, 10:28 AM MST | Flash Flood Watch | TWC | Cochise, Graham, Pima, Pinal, Santa Cruz | 6 hr |
| Aug 17, 11:02 AM MST | Flash Flood Warning | TWC | Pima, Pinal | 118 min |
| Aug 17, 12:26 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Aug 17, 1:00 PM MST | Flash Flood Warning | TWC | Cochise | 2 hr |
| Aug 17, 1:20 PM MST | Areal Flood Advisory | TWC | Pinal | 3 hr |
| Aug 17, 2:05 PM MST | Flash Flood Warning | TWC | Pima, Pinal | 115 min |
| Aug 17, 2:36 PM MST | Areal Flood Advisory | TWC | Pima | 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.