Alert archive / Arizona / Flash Flood Warnings in 2014

Flash Flood Warning 64, NWS Tucson, AZ

September 8, 2014Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Sep 8, 2014, 9:25 AM MST for Pima County, Pinal County, Arizona. It was in force for 110 min. 2 reports 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
Sep 8, 2014, 9:25 AM MST (16:25 UTC)
Expired
Sep 8, 2014, 11:15 AM MST
In force
110 min
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

Counties Pima County, AZ, Pinal County, AZ

The radar

The Tucson radar (KEMX), 72 km from the middle of the area, began a volume at 16:25 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
Sep 8, 9:42 AM MSTFLASH FLOOD2 Se Saddlebrooke, AZSADDLEBROOKE WASH OUT OF ITS BANKS.
Sep 8, 10:12 AM MSTFLASH FLOOD1 Sw Oracle, AZWASHES FLOWING ACROSS THE STREETS. ROADS IMPASSIBLE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Tuscon, AZ (KDMA), launched 12:00Z, 4.4 hours before the alert went out and 39 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 12:00Z on 2014-09-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1182 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 12:00Z on 2014-09-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 15 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
1182 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
961 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
15 m²/s²
0-3 km storm-relative helicity
30 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.

883 
WGUS55 KTWC 081625
FFWTWC
AZC019-021-081815-
/O.NEW.KTWC.FF.W.0064.140908T1625Z-140908T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
925 AM MST MON SEP 8 2014

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 1115 AM MST

* AT 922 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  VERY HEAVY RAINFALL FROM A LINE OF THUNDERSTORMS STRETCHING FROM
  THE NORTH SIDE OF TUCSON...NORTH ACROSS THE CATALINA MOUNTAINS..
  THROUGH ORACLE TO MAMMOTH AND DUDLEYVILLE. EXPECT RAINFALL RATES
  OF OVER AN INCH IN 30 MINUTES TO AN HOUR. MOVEMENT OF THE 
  THUNDERSTORMS WAS TO THE NORTHEAST AT 5 MPH. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN
  MANUEL...ORACLE AND MAMMOTH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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 3262 11089 3294 11073 3272 11054 3225 11079
      3232 11086 3227 11098 3241 11095

$$
ZELL
1 follow-up statement
101 
WGUS75 KTWC 081702
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
1002 AM MST MON SEP 8 2014

AZC019-021-081815-
/O.CON.KTWC.FF.W.0064.000000T0000Z-140908T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
1002 AM MST MON SEP 8 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1115 AM MST FOR
CENTRAL PINAL AND NORTHEASTERN PIMA COUNTIES...

AT 948 AM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE VERY HEAVY RAINFALL FROM A LINE OF THUNDERSTORMS STRETCHING
FROM THE TUCSON METRO AREA...NORTH THROUGH CATALINA...TO ORACLE...TO
DUDLEYVILLE. AUTOMATED GAGES AND SPOTTER REPORTS INDICATE THAT 
BETWEEN ONE AND TWO INCHES OF RAINFALL HAS FALLEN ON THE NORTH SIDE 
OF CATALINA MOUNTAINS IN THE LAST HOUR...WITH STORM TOTAL AMOUNTS IN 
THE LAST 2 HOURS APPROACHING 3 INCHES OF RAINFALL IN THIS AREA. 
MOVEMENT OF THE THUNDERSTORMS WAS TO THE NORTHEAST AT 5 MPH.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CATALINA...
SADDLEBROOKE...SAN MANUEL...ORACLE AND MAMMOTH

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

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 3262 11089 3294 11073 3272 11054 3225 11079
      3232 11086 3227 11098 3241 11095

$$
ZELL

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 7, 7:21 PM MSTAreal Flood AdvisoryTWCPima84 min
Sep 7, 8:37 PM MSTFlash Flood WatchTWCCochise, Graham, Greenlee, Pima, Pinal, Santa Cruz21 hr
Sep 8, 7:31 AM MSTAreal Flood AdvisoryTWCPinal3 hr
Sep 8, 8:47 AM MSTAreal Flood AdvisoryTWCPima, Pinal3 hr
Sep 8, 8:58 AM MSTFlash Flood WarningTWCPima2 hr
Sep 8, 9:05 AM MSTAreal Flood AdvisoryTWCPima3 hr
Sep 8, 9:27 AM MSTFlash Flood WarningTWCPima2 hr
Sep 8, 10:06 AM MSTFlash Flood WarningTWCPima, Pinal3 hr
Sep 8, 11:00 AM MSTFlash Flood WarningTWCPima, Pinal4 hr
Sep 8, 12:11 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Sep 8, 1:06 PM MSTAreal Flood AdvisoryTWCCochise114 min
Sep 8, 1:18 PM MSTFlash Flood WarningTWCCochise87 min
Sep 8, 1:40 PM MSTAreal Flood AdvisoryTWCCochise3 hr
Sep 8, 2:45 PM MSTAreal Flood WarningTWCPima6 hr
Sep 8, 3:00 PM MSTAreal Flood AdvisoryTWCCochise2 hr
Sep 8, 3:13 PM MSTAreal Flood AdvisoryTWCGreenlee3 hr
Sep 8, 3:27 PM MSTFlash Flood WarningTWCCochise3 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.