Alert archive / Arizona / Flash Flood Warnings in 2014

Flash Flood Warning 53, NWS Tucson, AZ

August 25, 2014Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Aug 25, 2014, 6:24 PM MST for Pima County, Arizona. It was in force for 111 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 25, 2014, 6:24 PM MST (01:24 UTC)
Expired
Aug 25, 2014, 8:15 PM MST
In force
111 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

County Pima County, AZ

The radar

The Tucson radar (KEMX), 150 km from the middle of the area, began a volume at 01:24 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, 1.4 hours before the alert went out and 131 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 2014-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1093 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 2014-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 8 square meters per square second.193958Sfc1 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
1093 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
2004 m above ground
0-6 km bulk shear
11 kt
0-1 km storm-relative helicity
8 m²/s²
0-3 km storm-relative helicity
-13 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.

016 
WGUS55 KTWC 260124
FFWTWC
AZC019-260315-
/O.NEW.KTWC.FF.W.0053.140826T0124Z-140826T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
624 PM MST MON AUG 25 2014

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTH CENTRAL PIMA COUNTY IN SOUTHEAST ARIZONA...

* UNTIL 815 PM MST

* AT 613 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATED
  3 TO 4 INCHES OF RAIN HAS FALLEN FROM STRONG STORMS LOCATED 5 MILES 
  EAST OF PAPAGO FARMS. RAINFALL RUNOFF FROM THESE STORMS WILL RESULT 
  IN FLASH FLOODING IN WASHES THAT DRAIN INTO PAPAGO FARMS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 3186 11231 3180 11200 3165 11206 3175 11238

$$
1 follow-up statement
458 
WGUS75 KTWC 260309
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
809 PM MST MON AUG 25 2014

AZC019-260316-
/O.EXP.KTWC.FF.W.0053.000000T0000Z-140826T0315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-
809 PM MST MON AUG 25 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 815 PM MST FOR SOUTH
CENTRAL PIMA COUNTY...

AMPLE TIME HAS ELAPSED FOR THE RAINFALL RUNOFF TO MAKE IT THROUGH 
PAPAGO FARMS THIS EVENING...AND THE THREAT OF FLASH FLOODING HAS 
SUBSIDED. THEREFORE...THE FLASH FLOOD WARNING HAS BEEN ALLOWED TO 
EXPIRE AT 815 PM MST.

HOWEVER...SIGNIFICANT PONDING OF WATER IS STILL LIKELY TO PERSIST 
ACROSS PAPAGO FARMS OVERNIGHT.

LAT...LON 3186 11231 3180 11200 3165 11206 3175 11238

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 5:28 PM MSTAreal Flood AdvisoryTWCPima, Pinal107 min
Aug 25, 5:40 PM MSTSpecial Weather StatementTWCPima50 min
Aug 25, 6:30 PM MSTSpecial Weather StatementTWC45 min
Aug 25, 7:15 PM MSTAreal Flood AdvisoryTWCPima, Pinal2 hr
Aug 25, 7:19 PM MSTFlash Flood WarningTWCPima3 hr
Aug 25, 7:58 PM MSTFlash Flood WarningTWCPima2 hr
Aug 25, 9:49 PM MSTAreal Flood AdvisoryTWCPima6 hr
Aug 26, 12:51 PM MSTAreal Flood AdvisoryTWCSanta Cruz114 min
Aug 26, 1:00 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Aug 26, 1:38 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Aug 26, 1:47 PM MSTSpecial Weather StatementTWCCochise43 min
Aug 26, 2:04 PM MSTAreal Flood AdvisoryTWCCochise, Pima, Santa Cruz3 hr
Aug 26, 2:18 PM MSTSpecial Weather StatementTWC42 min
Aug 26, 2:21 PM MSTAreal Flood AdvisoryTWCPima114 min
Aug 26, 2:36 PM MSTFlash Flood WarningTWCPima84 min
Aug 26, 2:43 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Aug 26, 2:46 PM MSTFlash Flood WarningTWCPima, Santa Cruz119 min
Aug 26, 2:49 PM MSTFlash Flood WarningTWCCochise116 min
Aug 26, 3:55 PM MSTAreal Flood AdvisoryTWCPima, Santa Cruz3 hr
Aug 26, 3:58 PM MSTSpecial Weather StatementTWC47 min
Aug 26, 4:11 PM MSTSpecial Weather StatementTWC34 min
Aug 26, 4:36 PM MSTAreal Flood AdvisoryTWCCochise, Graham, Pima3 hr

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.