Alert archive / Arizona / Flash Flood Warnings in 2014

Flash Flood Warning 69, NWS Tucson, AZ

September 8, 2014Cochise County, Arizona

NWS Tucson, AZ issued this flash flood warning at Sep 8, 2014, 3:27 PM MST for Cochise County, Arizona. It was in force for 3 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
Sep 8, 2014, 3:27 PM MST (22:27 UTC)
Expired
Sep 8, 2014, 6:30 PM MST
In force
3 hr
Issued by
NWS Tucson, AZ
Area
Storm-based polygon
Flood severity
None

County Cochise County, AZ

The radar

The Tucson radar (KEMX), 57 km from the middle of the area, began a volume at 22:28 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 12:00Z, 10.5 hours before the alert went out and 84 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.

320 
WGUS55 KTWC 082227
FFWTWC
AZC003-090130-
/O.NEW.KTWC.FF.W.0069.140908T2227Z-140909T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 630 PM MST

* AT 324 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  HEAVY RAIN ACROSS CENTRAL COCHISE COUNTY FROM NEAR TOMBSTONE
  NORTHWARD THROUGH THE DRAGOON MOUNTAINS AND PORTIONS OF I-10
  BETWEEN BENSON AND WILLCOX. RAINFALL AMOUNTS IN EXCESS OF 2
  INCHES WILL CAUSE FLASH FLOODING AND FLOODING.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO I-10 AND
  TEXAS CANYON...DRAGOON AND COCHISE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF WASHES
AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES AS
WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

&&

LAT...LON 3214 11013 3218 10978 3177 10984 3171 11029

$$

MEYER
3 follow-up statements
431 
WGUS75 KTWC 082256
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
356 PM MST MON SEP 8 2014

AZC003-090130-
/O.CON.KTWC.FF.W.0069.000000T0000Z-140909T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
356 PM MST MON SEP 8 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR
CENTRAL COCHISE COUNTY...

AT 348 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LARGE AREA OF HEAVY RAIN THROUGH CENTRAL COCHISE COUNTY
BETWEEN TOMBSTONE AND INTERSTATE 10. ONE RAINFALL GAUGE IN THE 
DRAGOON MOUNTAINS HAS REGISTERED 1.77 INCHES OF RAIN IN THE PAST 
HOUR. RADAR RAINFALL ESTIMATES EXCEED 2 INCHES IN SOME LOCATIONS 
INCLUDING NEAR TEXAS CANYON AT I-10.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO I-10 AND
TEXAS CANYON...DRAGOON AND COCHISE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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.

&&

LAT...LON 3214 11013 3218 10978 3177 10984 3171 11029

$$

MEYER
037 
WGUS75 KTWC 090030
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
530 PM MST MON SEP 8 2014

AZC003-090130-
/O.CON.KTWC.FF.W.0069.000000T0000Z-140909T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
530 PM MST MON SEP 8 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM MST FOR
CENTRAL COCHISE COUNTY...

AT 524 PM MST...SHOWERS WERE QUICKLY DIMINISHING IN INTENSITY IN 
CENTRAL COCHISE COUNTY AND MOVING EASTWARD OUT OF THE AREA. HEAVY 
FLOW FROM WIDESPREAD RAINFALL BETWEEN 1 AND 3 INCHES FROM NEAR 
TOMBSTONE NORTHWARD TO I-10 WILL CONTINUE TO GENERATE FLASH FLOODING 
CONDITIONS LATE THIS AFTERNOON. EXPECT HEAVY FLOW IN WASHES AND 
PONDING OF WATER IN ROADWAYS TO CONTINUE OVERNIGHT.

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO I-10 AND
TEXAS CANYON...DRAGOON AND COCHISE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

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.

&&

LAT...LON 3214 11013 3218 10978 3177 10984 3171 11029

$$

MEYER
203 
WGUS75 KTWC 090121
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
621 PM MST MON SEP 8 2014

AZC003-090130-
/O.EXP.KTWC.FF.W.0069.000000T0000Z-140909T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
COCHISE AZ-
621 PM MST MON SEP 8 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 630 PM MST FOR CENTRAL
COCHISE COUNTY...

AT 620 PM MST SHOWERS HAD ENDED ACROSS CENTRAL COCHISE COUNTY. 
EXPECT HEAVY FLOW IN STREAMS AND WASHES AS WELL AS SOME PONDING IN 
ROADWAYS INTO THE EARLY MORNING HOURS.

LAT...LON 3214 11013 3218 10978 3177 10984 3171 11029

$$

MEYER

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, 9:25 AM MSTFlash Flood WarningTWCPima, Pinal110 min
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

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.