Alert archive / Arizona / Flash Flood Warnings in 2012
Flash Flood Warning 7, NWS Tucson, AZ
NWS Tucson, AZ issued this flash flood warning at Jul 12, 2012, 4:30 PM MST for Pima County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 12, 2012, 4:30 PM MST (23:30 UTC)
- Expired
- Jul 12, 2012, 6:30 PM MST
- In force
- 2 hr
- Issued by
- NWS Tucson, AZ
- Area
- Storm-based polygon
- Flood severity
- None
County Pima County, AZ
The radar
The Tucson radar (KEMX), 121 km from the middle of the area, began a volume at 23:30 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, 11.5 hours before the alert went out and 109 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
- 650 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 1495 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
157
WGUS55 KTWC 122330
FFWTWC
AZC019-130130-
/O.NEW.KTWC.FF.W.0007.120712T2330Z-120713T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
430 PM MST THU JUL 12 2012
THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL PIMA COUNTY IN SOUTH CENTRAL ARIZONA...
* UNTIL 630 PM MST
* AT 424 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A THUNDERSTORM WEST OF CHOULIC THAT IS LIKELY PRODUCING FLASH
FLOODING IN THE AREA AND ALSO EXTENDING TOWARD VAMORI AND SOUTH
KOMELIK.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VAMORI...
TOPAWA...SOUTH KOMELIK...COWLIC...CHOULIC AND BIG FIELDS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 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 3158 11190 3163 11204 3165 11207 3199 11206
3175 11167 3154 11169 3153 11169
$$2 follow-up statements
777
WGUS75 KTWC 122358
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
458 PM MST THU JUL 12 2012
AZC019-130130-
/O.CON.KTWC.FF.W.0007.000000T0000Z-120713T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
458 PM MST THU JUL 12 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR SOUTH
CENTRAL PIMA COUNTY...
AT 442 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A THUNDERSTORM CAPABLE OF PRODUCING FLASH FLOODING FROM
EAST OF VAMORI AND WEST OF A LINE FROM SOUTH KOMELIK TO CHOULIC TO
SAN MIGUEL.
LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO VAMORI...
TOPAWA...SOUTH KOMELIK...COWLIC AND BIG FIELDS
DOPPLER RADAR RAINFALL ESTIMATES INDICATE THAT AMOUNTS IN EXCESS OF
3 INCHES PER HOUR ARE FALLING WITH THIS STORM. THE MAIN WASH
AFFECTED BY THE HEAVY RAIN WILL BE THE VAMORI WASH. IN ADDITION...
INDIAN ROUTES 2 AND 19 WILL BE AFFECTED BY THE HEAVY RAIN WITH FAST
FLOWING WATER MOVING ACROSS DIPS IN THE ROADWAY. DO NOT CROSS THE
HIGHWAY WHERE WATER COVERS THE ROAD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...COUNTRY ROADS...AS WELL AS FARMLAND ALONG THE
BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3158 11190 3163 11204 3165 11207 3199 11206
3175 11167 3154 11169 3153 11169
$$368
WGUS75 KTWC 130130
FFSTWC
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
630 PM MST THU JUL 12 2012
AZC019-130136-
/O.EXP.KTWC.FF.W.0007.000000T0000Z-120713T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
630 PM MST THU JUL 12 2012
...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MST FOR SOUTH
CENTRAL PIMA COUNTY...
VERY HEAVY RAIN FELL EARLIER IN THE AFTERNOON ACROSS AREAS FROM
COWLIC TO VAMORI TO SAN MIGUEL. HOWEVER...THE RAIN HAS BEEN
DIMINISHING DURING THE PAST HALF HOUR OR SO. THEREFORE...THE FLASH
FLOOD WARNING WILL BE ALLOWED TO EXPIRE AT 630 PM MST. HOWEVER...A
SMALL STREAM FLOOD ADVISORY FOR THE SAME AREA IS IN EFFECT UNTIL 730
PM MST THIS EVENING. MOTORISTS TRAVELING NEAR THE VAMORI WASH...
SPECIFICALLY NEAR INDIAN ROUTES 2 AND 19 SHOULD DRIVE WITH CAUTION
SINCE SOME AREAS OF THE ROADWAY ARE LIKELY COVERED BY WATER.
LAT...LON 3158 11190 3163 11204 3165 11207 3199 11206
3175 11167 3154 11169 3153 11169
$$The office that day
Everything else NWS Tucson, AZ issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 3:14 PM MST | Severe Thunderstorm Warning | TWC | Pima | 33 min |
| Jul 12, 3:25 PM MST | Special Weather Statement | TWC | Santa Cruz | 50 min |
| Jul 12, 3:39 PM MST | Areal Flood Advisory | TWC | Pima | 2 hr |
| Jul 12, 3:54 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 min |
| Jul 12, 3:59 PM MST | Special Weather Statement | TWC | Pima | 61 min |
| Jul 12, 4:39 PM MST | Severe Thunderstorm Warning | TWC | Pima | 51 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.