Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 33, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 17, 2012, 1:00 PM MST for Cochise 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
- Aug 17, 2012, 1:00 PM MST (20:00 UTC)
- Expired
- Aug 17, 2012, 3:00 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 121 km from the middle of the area, began a volume at 20:00 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 (KDMA), launched 12:00Z, 8.0 hours before the alert went out and 151 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.
335
WGUS55 KTWC 172000
FFWTWC
AZC003-172200-
/O.NEW.KTWC.FF.W.0033.120817T2000Z-120817T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
100 PM MST FRI AUG 17 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 300 PM MST
* AT 1250 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE CHIRICAHUA MOUNTAINS
AND THE HORSESHOE 2 BURN SCAR. DOPPLER RADAR RAINFALL ESTIMATED 1
TO 1.5 INCHES OF RAINFALL UPSTREAM OF PORTAL IN THE CHIRICAHUA
MOUNTAINS.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PORTAL...
PARADISE AND CHIRICAHUA NATIONAL MONUMENT
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SHORT PERIOD OF MODERATE RAINFALL ON A BURNED WATERSHED CAN LEAD TO
FLASH FLOODS. SEEK HIGHER GROUND IMMEDIATELY...BUT IF IT IS UNSAFE TO
EVACUATE DUE TO FLASH FLOODING...HEAVY RAIN...OR POOR VISIBILITY THE
BEST ACTION MAY BE TO SHELTER IN PLACE IN A STURDY STRUCTURE. THE
FORCE OF RUSHING WATER AND DEBRIS CAN DAMAGE OR DESTROY CULVERTS...
BRIDGES...ROADWAYS...AND BUILDINGS. REMEMBER NEVER TO DRIVE THROUGH
RAPIDLY FLOWING WATER...YOU MAY BE SWEPT AWAY.
&&
LAT...LON 3186 10951 3206 10941 3206 10906 3163 10905
3163 10954
$$
GL2 follow-up statements
944
WGUS75 KTWC 172054
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
154 PM MST FRI AUG 17 2012
AZC003-172200-
/O.CON.KTWC.FF.W.0033.000000T0000Z-120817T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
154 PM MST FRI AUG 17 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 300 PM MST FOR EAST
CENTRAL COCHISE COUNTY...
AT 147 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE HORSESHOE
2 BURN SCAR IN THE CHIRICAHUA MOUNTAINS. THE HEAVIEST RAINFALL IS
NOW IN THE RUCKER CANYON AREA WITH 1 TO 1.5 INCHES HAVING EARLIER
OCCURRED UPSTREAM OF PORTAL.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO PORTAL...
PARADISE AND CHIRICAHUA NATIONAL MONUMENT
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SHORT PERIOD OF MODERATE RAINFALL ON A BURNED WATERSHED CAN LEAD TO
FLASH FLOODS. SEEK HIGHER GROUND IMMEDIATELY...BUT IF IT IS UNSAFE TO
EVACUATE DUE TO FLASH FLOODING...HEAVY RAIN...OR POOR VISIBILITY THE
BEST ACTION MAY BE TO SHELTER IN PLACE IN A STURDY STRUCTURE. THE
FORCE OF RUSHING WATER AND DEBRIS CAN DAMAGE OR DESTROY CULVERTS...
BRIDGES...ROADWAYS...AND BUILDINGS. REMEMBER NEVER TO DRIVE THROUGH
RAPIDLY FLOWING WATER...YOU MAY BE SWEPT AWAY.
&&
LAT...LON 3186 10951 3206 10941 3206 10906 3163 10905
3163 10954
$$
GL708
WGUS75 KTWC 172152
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
252 PM MST FRI AUG 17 2012
AZC003-172200-
/O.EXP.KTWC.FF.W.0033.000000T0000Z-120817T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
252 PM MST FRI AUG 17 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 300 PM MST FOR EAST CENTRAL
COCHISE COUNTY...
RAINFALL ACROSS THE HORSESHOE 2 BURN AREA IN THE CHIRICAHUA
MOUNTAINS HAS SUBSIDED OVER THE LAST HOUR OR SO. ALTHOUGH THERE
CONTINUES TO BE SOME FLOW CONTINUING DOWNSTREAM OFF THE
MOUNTAINS...THE THREAT FOR FLASH FLOODING HAS ENDED. THUS...THE
FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE.
LAT...LON 3186 10951 3206 10941 3206 10906 3163 10905
3163 10954
$$
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, 12:39 PM MST | Flash Flood Warning | TWC | Pima | 117 min |
| 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.