Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 15, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 16, 2012, 9:22 PM MST for Cochise County, Arizona. It was in force for 3 hr. 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, 9:22 PM MST (04:22 UTC)
- Expired
- Jul 17, 2012, 12:15 AM MST
- In force
- 3 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 58 km from the middle of the area, began a volume at 04:22 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, 9:34 PM MST | FLASH FLOOD | 1 N Hereford, AZ | CONSIDERABLE FLOODING OCCURRING WHERE MILLER CANYON CROSSES MOSON ROAD. |
| Jul 16, 10:00 PM MST | FLASH FLOOD | 5 S Sierra Vista, AZ | SWIFT WATER RESCUE ON RAMSEY ROAD AFTER COUPLE WAS STUCK IN VEHICLE. |
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, 4.4 hours before the alert went out and 97 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.
898 WGUS55 KTWC 170422 FFWTWC AZC003-170715- /O.NEW.KTWC.FF.W.0015.120717T0422Z-120717T0715Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 922 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... * UNTIL 1215 AM MST * AT 830 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 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. SOME RAINFALL TOTALS FROM AROUND THE REGION INCLUDE 2.56 INCHES AT MILLER CANYON...1.48 INCHES AT CARR CANYON...1.36 INCHES AT RAMSEY CANYON AND ASH CANYON HAD 1.79 INCHES. A TRAINED WEATHER SPOTTER IN ASH CANYON ALSO REPORTED 1.23 INCHES OF RAIN. ADDITIONAL HEAVY RAIN IS LIKELY TO CONTINUE WITH RUNOFF OCCURRING INTO THE EARLY MORNING HOURS ON TUESDAY. 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. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS. 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 3148 11046 3154 11015 3134 11016 3134 11046 $$ MOLLERE
1 follow-up statement
612 WGUS75 KTWC 170708 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 1208 AM MST TUE JUL 17 2012 AZC003-170715- /O.EXP.KTWC.FF.W.0015.000000T0000Z-120717T0715Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 1208 AM MST TUE JUL 17 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 1215 AM MST FOR SOUTHWESTERN COCHISE COUNTY... RAINFALL HAS GENERALLY ENDED OVER THE REGION DURING THE PAST COUPLE OF HOURS. THUS...THE FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. SOME STREAMS MAY STILL EXPERIENCE INCREASED RUNOFF THE NEXT FEW HOURS...THUS CAUTION IS STILL ADVISED. LAT...LON 3148 11046 3154 11015 3134 11016 3134 11046 $$ GL
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, 7:19 PM MST | Flash Flood Warning | TWC | Cochise | 116 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 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.