Alert archive / Arizona / Flash Flood Warnings in 2011
Flash Flood Warning 45, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Aug 17, 2011, 2:29 PM MST for Cochise County, Arizona. It was in force for 91 min. 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, 2011, 2:29 PM MST (21:29 UTC)
- Expired
- Aug 17, 2011, 4:00 PM MST
- In force
- 91 min
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Cochise County, AZ
The radar
The Tucson radar (KEMX), 124 km from the middle of the area, began a volume at 21:31 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 (KTUS), launched 12:00Z, 9.5 hours before the alert went out and 152 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
- 901 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 1550 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 43 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
979
WGUS55 KTWC 172129
FFWTWC
AZC003-172300-
/O.NEW.KTWC.FF.W.0045.110817T2129Z-110817T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
229 PM MST WED AUG 17 2011
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
EAST CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...
* UNTIL 400 PM MST
* AT 222 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
SHOWERS AND THUNDERSTORMS PRODUCING VERY HEAVY RAINFALL ACROSS THE
CHIRICAHUA MOUNTAINS. THESE SHOWERS AND THUNDERSTORMS WERE MOVING
TO THE NORTHWEST AT 10 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CHIRICAHUA NATIONAL MONUMENT...RUCKER CANYON...CAVE CREEK FLOWING
INTO PORTAL...AND THE HORSESHOE 2 BURN AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3211 10942 3211 10934 3205 10925 3191 10912
3175 10918 3158 10936 3173 10947
$$
BF2 follow-up statements
032
WGUS75 KTWC 172202
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
302 PM MST WED AUG 17 2011
AZC003-172300-
/O.CON.KTWC.FF.W.0045.000000T0000Z-110817T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
302 PM MST WED AUG 17 2011
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 400 PM MST FOR EAST
CENTRAL COCHISE COUNTY...
AT 254 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE SCATTERED TO NUMEROUS THUNDERSTORMS PRODUCING VERY HEAVY
RAIN. THESE THUNDERSTORMS WERE LOCATED NEAR CHIRICAHUA NATIONAL
MONUMENT...OR 21 MILES WEST OF RODEO...MOVING NORTHWEST AT 10 MPH.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CHIRICAHUA NATIONAL MONUMENT...RUCKER CANYON...CAVE CREEK FLOWING
INTO PORTAL...AND THE HORSESHOE 2 BURN AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3211 10942 3211 10934 3205 10925 3191 10912
3175 10918 3158 10936 3173 10947
$$
BF385
WGUS75 KTWC 172300
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
400 PM MST WED AUG 17 2011
AZC003-172307-
/O.EXP.KTWC.FF.W.0045.000000T0000Z-110817T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
400 PM MST WED AUG 17 2011
...THE FLASH FLOOD WARNING WILL EXPIRE AT 400 PM MST FOR EAST CENTRAL
COCHISE COUNTY...
AT 400 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED THAT ONLY A
FEW LIGHT SHOWERS REMAINED OVER PORTIONS OF THE WARNING AREA IN THE
CHIRICAHUA MOUNTAINS. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN
ALLOWED TO EXPIRE. ELEVATED FLOWS IN NORMALLY DRY WASHES WILL
CONTINUE TO SUBSIDE.
LAT...LON 3211 10942 3211 10934 3205 10925 3191 10912
3175 10918 3158 10936 3173 10947
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 12:22 PM MST | Areal Flood Advisory | TWC | Cochise | 83 min |
| Aug 17, 1:17 PM MST | Special Weather Statement | TWC | 43 min | |
| Aug 17, 2:44 PM MST | Severe Thunderstorm Warning | TWC | Santa Cruz | 31 min |
| Aug 17, 3:25 PM MST | Areal Flood Advisory | TWC | Pinal | 80 min |
| Aug 17, 3:44 PM MST | Areal Flood Advisory | TWC | Cochise | 2 hr |
| Aug 17, 3:53 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 37 min |
| Aug 17, 4:27 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 33 min |
| Aug 17, 4:30 PM MST | Flash Flood Warning | TWC | Cochise | 90 min |
| Aug 17, 4:57 PM MST | Severe Thunderstorm Warning | TWC | Cochise | 33 min |
Nearby
Flash Flood Warnings in Arizona, 2011Every flash flood warning in 2011
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.