Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 27, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 30, 2012, 9:42 PM MST for Cochise County, Arizona. It was in force for 2 hr. 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
- Jul 30, 2012, 9:42 PM MST (04:42 UTC)
- Expired
- Jul 30, 2012, 11:45 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 30, 10:08 PM MST | FLASH FLOOD | Hereford, AZ | SWIFT WATER RESCUE ON EAST THREE CANYON RD IN HEREFORD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Tuscon, AZ (KTUS), launched 00:00Z, 4.7 hours before the alert went out and 80 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3008 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 57 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
307 WGUS55 KTWC 310442 FFWTWC AZC003-310645- /O.NEW.KTWC.FF.W.0027.120731T0442Z-120731T0645Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 942 PM MST MON JUL 30 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA... THIS INCLUDES THE CITY OF SIERRA VISTA... * UNTIL 1145 PM MST * AT 937 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED FLASH FLOODING FROM NUMEROUS THUNDERSTORMS ACROSS SOUTHWEST COCHISE COUNTY. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO WHETSTONE...KARTCHNER CAVERNS STATE PARK...FAIRBANK...TOMBSTONE... ST. DAVID AND SAINT DAVID. 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. 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 3192 11045 3189 11002 3133 11000 3135 11045 $$ GL
3 follow-up statements
012 WGUS75 KTWC 310504 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1004 PM MST MON JUL 30 2012 AZC003-310645- /O.CON.KTWC.FF.W.0027.000000T0000Z-120731T0645Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 1004 PM MST MON JUL 30 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 1000 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A THUNDERSTORM PRODUCING FLASH FLOODING OVER THE HUACHUCA MOUNTAINS AND THE MONUMENT BURN SCAR. AN AUTOMATED RAIN GAUGE IN ASH CANYON HAS RECORDED 0.98 INCHES OF RAIN IN THE LAST 45 MINUTES. THIS WILL CAUSE FLASH FLOOD IN LOCATIONS DOWNSTREAM TOWARDS HIGHWAY 92. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUACHUCA CITY PRECAUTIONARY/PREPAREDNESS ACTIONS... A SHORT PERIOD OF MODERATE RAINFALL ON A BURNED WATERSHED CAN LEAD TO FLASH FLOODS. SEEK HIGHER GROUND IMMEDIATELY...BUT IF IT IS UNSAFE TO EVACUATE DUE TO FLASH FLOODING...HEAVY RAIN...OR POOR VISIBILITY THE BEST ACTION MAY BE TO SHELTER IN PLACE IN A STURDY STRUCTURE. THE FORCE OF RUSHING WATER AND DEBRIS CAN DAMAGE OR DESTROY CULVERTS... BRIDGES...ROADWAYS...AND BUILDINGS. REMEMBER NEVER TO DRIVE THROUGH RAPIDLY FLOWING WATER...YOU MAY BE SWEPT AWAY. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. && LAT...LON 3192 11045 3189 11002 3133 11000 3135 11045 $$ GL
523 WGUS75 KTWC 310539 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1039 PM MST MON JUL 30 2012 AZC003-310645- /O.CON.KTWC.FF.W.0027.000000T0000Z-120731T0645Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 1039 PM MST MON JUL 30 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1145 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 1033 PM MST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED A THUNDERSTORM PRODUCING FLASH FLOODING IN SOUTHWEST COCHISE COUNTY. A SWIFT WATER RESCUE IS CURRENTLY TAKING PLACE IN HEREFORD. RAINFALL AMOUNTS IN EXCESS OF ONE INCH HAVE OCCURRED IN ASH CANYON WITHIN THE MONUMENT BURN SCAR AND IS PRODUCING FLASH FLOODING DOWNSTREAM PAST HIGHWAY 92. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUACHUCA CITY PRECAUTIONARY/PREPAREDNESS ACTIONS... BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. 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 3192 11045 3189 11002 3133 11000 3135 11045 $$ GL
065 WGUS75 KTWC 310641 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1141 PM MST MON JUL 30 2012 AZC003-310647- /O.EXP.KTWC.FF.W.0027.000000T0000Z-120731T0645Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 1141 PM MST MON JUL 30 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 1145 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 1140 PM MST...THE RAINFALL HAS BECOME MUCH LIGHTER ACROSS SOUTHWEST COCHISE COUNTY. ALTHOUGH SOME RUNOFF WILL CONTINUE OVERNIGHT...FLASH FLOODING HAS ENDED...THUS THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. LAT...LON 3192 11045 3189 11002 3133 11000 3135 11045 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 6:56 PM MST | Special Weather Statement | TWC | Cochise | 49 min |
| Jul 30, 7:27 PM MST | Areal Flood Advisory | TWC | Cochise | 3 hr |
| Jul 30, 7:29 PM MST | Flash Flood Warning | TWC | Cochise | 2 hr |
| Jul 30, 8:34 PM MST | Special Weather Statement | TWC | Cochise | 41 min |
| Jul 30, 9:14 PM MST | Special Weather Statement | TWC | Graham | 46 min |
| Jul 30, 9:17 PM MST | Special Weather Statement | TWC | Cochise | 28 min |
| Jul 30, 9:40 PM MST | Severe Thunderstorm Warning | TWC | Graham | 38 min |
| Jul 30, 9:48 PM MST | Special Weather Statement | TWC | Greenlee | 42 min |
| Jul 30, 10:39 PM MST | Special Weather Statement | TWC | Santa Cruz | 51 min |
| Jul 30, 11:16 PM MST | Special Weather Statement | TWC | 44 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.