Alert archive / Arizona / Flash Flood Warnings in 2014

Flash Flood Warning 9, NWS Tucson, AZ

July 11, 2014Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 11, 2014, 9:16 PM MST for Cochise County, Arizona. It was in force for 59 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
Jul 11, 2014, 9:16 PM MST (04:16 UTC)
Expired
Jul 11, 2014, 10:15 PM MST
In force
59 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 39 km from the middle of the area, began a volume at 04:19 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 (KDMA), launched 00:00Z, 4.3 hours before the alert went out and 79 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 2014-07-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 268 joules per kilogram.LCLLFCEL10008507005003002001001 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 2014-07-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -84 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
268 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
2717 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
-84 m²/s²
0-3 km storm-relative helicity
-38 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

791 
WGUS55 KTWC 120416
FFWTWC
AZC003-120515-
/O.NEW.KTWC.FF.W.0009.140712T0416Z-140712T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
916 PM MST FRI JUL 11 2014

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 1015 PM MST

* AT 912 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  A LINE OF THUNDERSTORMS OVER SOUTHWEST COCHISE COUNTY PRODUCING
  VERY HEAVY RAINFALL. THESE THUNDERSTORMS WERE MOVING WEST AT 5 
  MPH. THIS FLASH FLOOD WARNING REPLACES THE EARLIER FLASH FLOOD
  WARNING FOR SOUTHWEST COCHISE COUNTY AND EXPANDS THE AREA NORTH
  THROUGH THE WHETSTONE AND KARTCHNER CAVERNS STATE PARK AREA. 
  FLOODING HAD BEEN REPORTED IN THE SIERRA VISTA AREA EARLIER.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  HUACHUCA CITY

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.

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.

&&

LAT...LON 3190 11044 3189 11025 3166 11014 3134 11013
      3134 11046

$$
ZELL
2 follow-up statements
323 
WGUS75 KTWC 120446
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
946 PM MST FRI JUL 11 2014

AZC003-120515-
/O.CON.KTWC.FF.W.0009.000000T0000Z-140712T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
946 PM MST FRI JUL 11 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM MST FOR
SOUTHWESTERN COCHISE COUNTY...

AT 935 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE MODERATE TO HEAVY RAIN ACROSS PORTIONS OF SOUTHWEST COCHISE
COUNTY. RADAR RAINFALL ESTIMATES IN THE LAST HOUR RANGED BETWEEN 
ONE-HALF INCH NEAR SIERRA VISTA TO OVER AN INCH BETWEEN WHETSTONE 
AND KARTCHNER CAVERNS STATE PARK. THIS RAINFALL IS OCCURRING IN AN
AREA THAT RECEIVED HEAVY RAINFALL EARLIER THIS EVENING.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO HUACHUCA CITY

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.

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.

&&

LAT...LON 3190 11044 3189 11025 3166 11014 3134 11013
      3134 11046

$$
ZELL
017 
WGUS75 KTWC 120518
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1018 PM MST FRI JUL 11 2014

AZC003-120526-
/O.EXP.KTWC.FF.W.0009.000000T0000Z-140712T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
1018 PM MST FRI JUL 11 2014

...THE FLASH FLOOD WARNING HAS EXPIRED FOR SOUTHWESTERN COCHISE
COUNTY...

AT 1015 PM MST...NATIONAL WEATHER SERVICE RADAR INDICATED THE 
SHOWERS AND THUNDERSTORMS HAD WEAKENED...WITH JUST SOME LIGHT TO 
MODERATE RAINFALL IN SOUTHWEST COCHISE COUNTY. HEAVY FLOW WILL 
CONTINUE IN SOME WASHES FOR THE NEXT HOUR OR TWO. ALSO BE CAUTIONS 
OF PONDING OF WATER ON ROADWAYS IN LOW SPOTS AND DIPS.

LAT...LON 3190 11044 3189 11025 3166 11014 3134 11013
      3134 11046

$$
ZELL

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 11, 5:21 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz114 min
Jul 11, 6:50 PM MSTAreal Flood AdvisoryTWCCochise115 min
Jul 11, 7:44 PM MSTFlash Flood WarningTWCCochise91 min
Jul 11, 8:33 PM MSTAreal Flood AdvisoryTWCCochise, Pima, Santa Cruz87 min
Jul 11, 10:01 PM MSTAreal Flood AdvisoryTWCPima3 hr
Jul 12, 3:25 AM MSTFlash Flood WatchTWCCochise, Graham, Pima, Santa Cruz19 hr
Jul 12, 3:37 AM MSTBlowing Dust AdvisoryTWCPima, Pinal16 hr
Jul 12, 1:58 PM MSTSpecial Weather StatementTWC32 min

Nearby

Flash Flood Warnings in Arizona, 2014Every flash flood warning in 2014

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.