Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 13, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 16, 2012, 7:19 PM MST for Cochise County, Arizona. It was in force for 116 min. 2 reports 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 16, 2012, 7:19 PM MST (02:19 UTC)
- Expired
- Jul 16, 2012, 9:15 PM MST
- In force
- 116 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 64 km from the middle of the area, began a volume at 02:18 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 |
|---|---|---|---|
| Jul 16, 7:30 PM MST | FLASH FLOOD | 3 Nne Coronado National, AZ | WEATHER SPOTTER REPORTED FLOODING AT ASH CANYON AND TWIN OAKS ROAD. WATER WAS RAPIDLY FLOW OVER THE ROADWAY IN A SWATH ABOUT 20 FEET WIDE AND 6 INCHES DEEP WITH SMALL 10 TO 15 LB BOULDERS WITHIN THE FLOW. |
| Jul 16, 8:15 PM MST | FLASH FLOOD | 5 W Hereford, AZ | TRAINED WEATHER SPOTTER IN ASH CANYON REPORTED THAT ASH CANYON WAS SWOLLEN WITH RAPIDLY FLOWING WATERS ROARING THROUGH THE CANYON. |
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, 2.3 hours before the alert went out and 104 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
- 646 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 2318 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
613 WGUS55 KTWC 170219 FFWTWC AZC003-170415- /O.NEW.KTWC.FF.W.0013.120717T0219Z-120717T0415Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 719 PM MST MON JUL 16 2012 THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A * FLASH FLOOD WARNING FOR... SOUTHWESTERN COCHISE COUNTY IN SOUTHEAST ARIZONA... INCLUDING THE MONUMENT FIRE BURN AREA * UNTIL 915 PM MST * AT 709 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR AND REPORTS FROM A TRAINED WEATHER SPOTTER INDICATES THAT A THUNDERSTORM OVER THE MONUMENT FIRE BURN AREA IS PRODUCING MODERATE TO HEAVY RAIN...ESPECIALLY OVER ASH CANYON. THIS RAINFALL IS LIKELY RESULTING IN FLASH FLOODING. RADAR RAINFALL ESTIMATES WERE GREATER THAN AN INCH OF RAIN. ADDITIONAL CANYONS IN THE HUACHUCA MOUNTAINS COULD EXPERIENCE A RISE IN WATERS AS THESE SHOWERS AND STORMS MOVE OVER THE REGION. ADDITIONAL SHOWERS WEST OF THE HUACHUCAS WILL LIKELY MOVE OVER THE REGION WITHIN THE HOUR. 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 3150 11015 3134 11013 3134 11034 3149 11032 $$
1 follow-up statement
150 WGUS75 KTWC 170333 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 833 PM MST MON JUL 16 2012 AZC003-170415- /O.CON.KTWC.FF.W.0013.000000T0000Z-120717T0415Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 833 PM MST MON JUL 16 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 818 PM MST...A TRAINED WEATHER SPOTTER REPORTED FLASH FLOODING WAS OCCURRING IN ASH CANYON WITHIN THE MONUMENT FIRE BURN AREA IN SOUTHWEST COCHISE COUNTY. WEATHER SERVICE RADAR ESTIMATED THAT THE HEAVIEST RAINFALL HAS HAS OCCURED OVER RAMSEY...MILLER....ASH AND STUMP CREEK CANYONS. ADDITIONAL CANYONS IN THE HUACHUCA MOUNTAINS COULD EXPERIENCE A RISE IN WATERS AS THESE SHOWERS AND STORMS WEST OF THE HUACHUCAS WILL LIKELY MOVE OVER THE REGION WITHIN THE HOUR. PRECAUTIONARY/PREPAREDNESS ACTIONS... A SHORT PERIOD OF MODERATE RAINFALL ON A BURNED WATERSHED CAN LEAD TO FLASH FLOODS. SEEK HIGHER GROUND IMMEDIATELY...BUT IF IT IS UNSAFE TO EVACUATE DUE TO FLASH FLOODING...HEAVY RAIN...OR POOR VISIBILITY THE BEST ACTION MAY BE TO SHELTER IN PLACE IN A STURDY STRUCTURE. THE FORCE OF RUSHING WATER AND DEBRIS CAN DAMAGE OR DESTROY CULVERTS... BRIDGES...ROADWAYS...AND BUILDINGS. REMEMBER NEVER TO DRIVE THROUGH RAPIDLY FLOWING WATER...YOU MAY BE SWEPT AWAY. && LAT...LON 3150 11015 3134 11013 3134 11034 3149 11032 $$
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:07 PM MST | Areal Flood Advisory | TWC | Cochise | 83 min |
| Jul 16, 7:54 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
| Jul 16, 8:09 PM MST | Flash Flood Warning | TWC | Pima | 111 min |
| Jul 16, 9:22 PM MST | Flash Flood Warning | TWC | Cochise | 3 hr |
| Jul 17, 2:05 PM MST | Flash Flood Warning | TWC | Cochise, Santa Cruz | 55 min |
| Jul 17, 3:51 PM MST | Areal Flood Advisory | TWC | Cochise | 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.