Alert archive / Arizona / Flash Flood Warnings in 2012

Flash Flood Warning 1, NWS Tucson, AZ

July 3, 2012Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 3, 2012, 9:14 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 3, 2012, 9:14 PM MST (04:14 UTC)
Expired
Jul 3, 2012, 11:15 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), 55 km from the middle of the area, began a volume at 04:15 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

TimeReportWhereRemark
Jul 3, 9:30 PM MSTFLASH FLOODTombstone, AZTWO HOMES FLOODED WITHIN CITY OF TOMBSTONE.

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, 4.2 hours before the alert went out and 92 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.

Skew-T log-pSkew-T log-p diagram, Tuscon, AZ at 00:00Z on 2012-07-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 00:00Z on 2012-07-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -29 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2690 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-29 m²/s²
0-3 km storm-relative helicity
22 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

122 
WGUS55 KTWC 040414
FFWTWC
AZC003-040615-
/O.NEW.KTWC.FF.W.0001.120704T0414Z-120704T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
914 PM MST TUE JUL 3 2012

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  CENTRAL COCHISE COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 1115 PM MST

* AT 906 PM MST...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED FLASH
  FLOODING NEAR AND JUST EAST OF TOMBSTONE. ALSO...NATIONAL WEATHER
  SERVICE DOPPLER RADAR DETECTED NUMEROUS SHOWERS AND THUNDERSTORMS
  CONTINUING TO MOVE OVER THE AFFECTED AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FAIRBANK

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3179 11019 3179 10993 3162 10991 3162 11019

$$
2 follow-up statements
219 
WGUS75 KTWC 040450
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
950 PM MST TUE JUL 3 2012

AZC003-040615-
/O.CON.KTWC.FF.W.0001.000000T0000Z-120704T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
950 PM MST TUE JUL 3 2012

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 PM MST FOR
CENTRAL COCHISE COUNTY...

AT 940 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR DETECTED 
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ACROSS CENTRAL AND 
SOUTHWEST COCHISE COUNTY. MOVEMENT OF THESE SHOWERS AND 
THUNDERSTORMS WAS TO THE NORTHWEST AT 10 MPH. RADAR RAINFALL 
ESTIMATES OF 1.00 TO 1.50 INCHES HAD OCCURRED SINCE 845 PM MST. AT 
930 PM MST...TOMBSTONE MARSHALL OFFICE REPORTED TWO HOUSES FLOODED 
WITHIN THE CITY OF TOMBSTONE. ADDITIONAL SHOWERS AND THUNDERSTORMS 
WILL CONTINUE TO PRODUCE FLOODING THROUGH 1115 PM MST.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FAIRBANK AND
TOMBSTONE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3179 11019 3179 10993 3162 10991 3162 11019

$$
582 
WGUS75 KTWC 040609
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1109 PM MST TUE JUL 3 2012

AZC003-040615-
/O.EXP.KTWC.FF.W.0001.000000T0000Z-120704T0615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1109 PM MST TUE JUL 3 2012

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1115 PM MST FOR CENTRAL
COCHISE COUNTY...

THE HEAVY RAINFALL RUNOFF THAT RESULTED IN FLASH FLOODING NEAR THE 
TOWN OF TOMBSTONE HAS HAD TIME TO DRAIN INTO NORMALLY DRY WASHES AND 
THE THREAT OF FLASH FLOODING HAS SUBSIDED. THEREFORE...THE FLASH 
FLOOD WARNING HAS BEEN ALLOWED TO EXPIRE AT 1115 PM MST. 

HOWEVER...SIGNIFICANT PONDING OF WATER IS STILL LIKELY IN ROADWAY 
DIPS AND OTHER LOW LYING AREAS. MOTORISTS SHOULD USE CAUTION AND 
NEVER ATTEMPT TO CROSS THROUGH A WASH FILLED WITH RUNNING WATER OF 
UNKNOWN DEPTH.

LAT...LON 3179 11019 3179 10993 3162 10991 3162 11019

$$

The office that day

Everything else NWS Tucson, AZ issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 3, 8:21 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Jul 3, 9:25 PM MSTAreal Flood AdvisoryTWCPima3 hr
Jul 3, 10:02 PM MSTAreal Flood AdvisoryTWCSanta Cruz3 hr
Jul 3, 10:15 PM MSTAreal Flood AdvisoryTWCPima3 hr
Jul 4, 12:00 AM MSTFlash Flood WatchTWCCochise, Graham, Pima, Pinal, Santa Cruz17 hr
Jul 4, 12:59 AM MSTAreal Flood AdvisoryTWCCochise, Pima, Santa Cruz2 hr
Jul 4, 10:00 AM MSTAreal Flood AdvisoryTWCPinal3 hr
Jul 4, 10:48 AM MSTAreal Flood AdvisoryTWCPima12 min
Jul 4, 10:58 AM MSTAreal Flood AdvisoryTWCPima82 min
Jul 4, 12:16 PM MSTAreal Flood AdvisoryTWCPima3 hr
Jul 4, 12:48 PM MSTAreal Flood AdvisoryTWCPima117 min
Jul 4, 12:59 PM MSTFlash Flood WarningTWCPima2 hr
Jul 4, 1:32 PM MSTFlash Flood WarningTWCPima118 min
Jul 4, 1:45 PM MSTFlash Flood WarningTWCPima111 min
Jul 4, 2:24 PM MSTFlash Flood WarningTWCPinal3 hr
Jul 4, 2:55 PM MSTAreal Flood AdvisoryTWCCochise, Graham, Greenlee, Pima, Pinal, Santa Cruz3 hr
Jul 4, 4:11 PM MSTAreal Flood AdvisoryTWCGraham, Greenlee3 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.