Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 22, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 28, 2012, 4:23 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 28, 2012, 4:23 PM MST (23:23 UTC)
- Expired
- Jul 28, 2012, 6:30 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), 50 km from the middle of the area, began a volume at 23:23 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 28, 5:18 PM MST | FLASH FLOOD | Se Sierra Vista, AZ | SHERIFFS OFFICE NOTED THAT RAMSEY ROAD...CORONADO ROAD...MEMORIAL ROAD...STONE RIDGE ROAD...MOUNTAIN VIEW ROAD AND PINTEX ROAD WERE ALL CLOSED DUE TO FLASH FLOODING. |
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 12:00Z, 11.4 hours before the alert went out and 90 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
- 34 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1726 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
216 WGUS55 KTWC 282323 FFWTWC AZC003-290130- /O.NEW.KTWC.FF.W.0022.120728T2323Z-120729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TUCSON AZ 423 PM MST SAT JUL 28 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 630 PM MST * AT 418 PM MST...FLASH FLOODING WAS REPORTED FROM A THUNDERSTORM OVER THE WARNED AREA. * LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUACHUCA CITY 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 3170 11042 3158 11014 3134 11017 3134 11044 $$ MEYER
3 follow-up statements
427 WGUS75 KTWC 282342 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 442 PM MST SAT JUL 28 2012 AZC003-290130- /O.CON.KTWC.FF.W.0022.000000T0000Z-120729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 442 PM MST SAT JUL 28 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 436 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE AN AREA OF STRONG THUNDERSTORMS GENERATING HEAVY RAIN IN THE HUACHUCA MOUNTAIN AND SIERRA VISTA AREA. RAINFALL AMOUNTS BETWEEN 1/2 AND 3/4 OF AN INCH OVER BURN AREAS IN THE HUACHUCA MOUNTAINS WERE LIKELY PRODUCING FLASH FLOODING WITH HEAVY RAIN IN EXCESS OF 1 INCH IN SIERRA VISTA LEADING TO SOME ROAD CLOSURES. LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SIERRA VISTA AND HUACHUCA CITY PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...BABOCOMARI RIVER...CARR CANYON...MILLER CANYON...STUMP CANYON...HUNTER CANYON...SLAUGHTER HOUSE WASH AND ASH CANYON. A SHORT PERIOD OF MODERATE RAINFALL ON A BURNED WATERSHED CAN LEAD TO FLASH FLOODS. SEEK HIGHER GROUND IMMEDIATELY...BUT IF IT IS UNSAFE TO EVACUATE DUE TO FLASH FLOODING...HEAVY RAIN...OR POOR VISIBILITY THE BEST ACTION MAY BE TO SHELTER IN PLACE IN A STURDY STRUCTURE. THE FORCE OF RUSHING WATER AND DEBRIS CAN DAMAGE OR DESTROY CULVERTS... BRIDGES...ROADWAYS...AND BUILDINGS. REMEMBER NEVER TO DRIVE THROUGH RAPIDLY FLOWING WATER...YOU MAY BE SWEPT AWAY. && LAT...LON 3170 11042 3158 11014 3134 11017 3134 11044 $$ MEYER
046 WGUS75 KTWC 290029 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 529 PM MST SAT JUL 28 2012 AZC003-290130- /O.CON.KTWC.FF.W.0022.000000T0000Z-120729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 529 PM MST SAT JUL 28 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 520 PM MST...AREAS OF MODERATE SHOWERS CONTINUED OVER SOUTHWESTERN COCHISE COUNTY. EXTENSIVE RUNOFF WILL CONTINUE FROM EARLIER HEAVY RAINFALL IN THE SIERRA VISTA AND HUACHUCA MOUNTAIN AREA. SHERIFFS OFFICE NOTED THAT RAMSEY ROAD...CORONADO ROAD...MEMORIAL ROAD...STONE RIDGE ROAD...MOUNTAIN VIEW ROAD AND PINTEX ROAD WERE ALL CLOSED DUE TO FLASH FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS INCLUDES THE FOLLOWING STREAMS AND DRAINAGES...BABOCOMARI RIVER...CARR CANYON...MILLER CANYON...STUMP CANYON...HUNTER CANYON...SLAUGHTER HOUSE WASH AND ASH CANYON. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES...CANYONS AND STREAMS...AS WELL AS ROADS AND OTHER DRAINAGE AREAS AND LOW LYING SPOTS. && LAT...LON 3170 11042 3158 11014 3134 11017 3134 11044 $$ MEYER
355 WGUS75 KTWC 290122 FFSTWC FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE TUCSON AZ 622 PM MST SAT JUL 28 2012 AZC003-290132- /O.EXP.KTWC.FF.W.0022.000000T0000Z-120729T0130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ COCHISE AZ- 622 PM MST SAT JUL 28 2012 ...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MST FOR SOUTHWESTERN COCHISE COUNTY... AT 622 PM MST...SHOWERS AND THUNDERSTORMS HAD ENDED ACROSS MOST OF SOUTHWESTERN COCHISE COUNTY. EXPECT HEAVY FLOW FROM WASHES AND STREAMS THROUGH THE EVENING HOURS WITH SOME ROAD CLOSURES TO CONTINUE. LAT...LON 3170 11042 3158 11014 3134 11017 3134 11044 $$ MEYER
The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 6:43 PM MST | Special Weather Statement | TWC | 47 min | |
| Jul 27, 8:49 PM MST | Special Weather Statement | TWC | 41 min | |
| Jul 28, 11:45 AM MST | Special Weather Statement | TWC | Cochise | 30 min |
| Jul 28, 1:06 PM MST | Special Weather Statement | TWC | Cochise | 39 min |
| Jul 28, 1:45 PM MST | Areal Flood Advisory | TWC | Cochise, Graham | 3 hr |
| Jul 28, 2:26 PM MST | Special Weather Statement | TWC | 34 min | |
| Jul 28, 2:35 PM MST | Special Weather Statement | TWC | Graham | 40 min |
| Jul 28, 2:44 PM MST | Severe Thunderstorm Warning | TWC | Pima | 31 min |
| Jul 28, 3:02 PM MST | Special Weather Statement | TWC | Santa Cruz | 43 min |
| Jul 28, 3:08 PM MST | Areal Flood Advisory | TWC | Pima | 3 hr |
| Jul 28, 3:11 PM MST | Flash Flood Warning | TWC | Santa Cruz | 60 min |
| Jul 28, 3:15 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Jul 28, 3:29 PM MST | Special Weather Statement | TWC | 31 min | |
| Jul 28, 3:33 PM MST | Special Weather Statement | TWC | 42 min | |
| Jul 28, 3:54 PM MST | Flash Flood Warning | TWC | Pima | 2 hr |
| Jul 28, 4:04 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 41 min |
| Jul 28, 4:44 PM MST | Special Weather Statement | TWC | Pinal | 46 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; radar from the NEXRAD Level II archive.