Alert archive / Arizona / Flash Flood Warnings in 2014

Flash Flood Warning 2, NWS Tucson, AZ

July 4, 2014Pima County, Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jul 4, 2014, 5:41 PM MST for Pima County, Pinal 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: Jul 4, 2014, 5:41 PM MST (00:41 UTC)
Expired: Jul 4, 2014, 8:45 PM MST
In force: 3 hr
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), 70 km from the middle of the area, began a volume at 00:44 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, 0.7 hours before the alert went out and 40 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 54 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 2558 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: -31 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.

260 
WGUS55 KTWC 050041
FFWTWC
AZC019-021-050345-
/O.NEW.KTWC.FF.W.0002.140705T0041Z-140705T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
541 PM MST FRI JUL 4 2014

THE NATIONAL WEATHER SERVICE IN TUCSON HAS ISSUED A

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

* UNTIL 845 PM MST

* AT 528 PM MST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
FLASH FLOODING FROM A THUNDERSTORM OVER THE NORTH SIDE OF THE 
CATALINA MOUNTAINS. AN AUTOMATED RAIN GAUGE AT SAMANIEGO PEAK HAS 
RECORDED 2.44 INCHES OF RAINFALL IN THE LAST HOUR. THIS EXCESSIVE 
RAINFALL WILL RESULT IN FLASH FLOODING IN WASHES INCLUDING THE UPPER 
AND MIDDLE CANADA DEL ORO...CAMPO BONITO WASH AND SMALLER WASHES ON 
THE NORTH SIDE OF THE CATALINA MOUNTAINS. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CAMPO
  BONITO AND BIOSPHERE 2

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ADDITIONAL RAINFALL AMOUNTS OF ONE INCH ARE POSSIBLE IN THE WARNED 
AREA.

IN HILLY TERRAIN THERE ARE HUNDREDS OF LOW WATER CROSSINGS WHICH ARE
POTENTIALLY DANGEROUS IN HEAVY RAIN. DO NOT ATTEMPT TO TRAVEL ACROSS 
FLOODED ROADS OR TRAILS. FIND ALTERNATE ROUTES. IT TAKES ONLY A FEW 
INCHES OF SWIFTLY FLOWING WATER TO CARRY VEHICLES AWAY.

&&

LAT...LON 3260 11086 3259 11066 3243 11059 3243 11075
      3241 11093

$$

GL

2 follow-up statements

430 
WGUS75 KTWC 050149
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
649 PM MST FRI JUL 4 2014

AZC019-021-050345-
/O.CON.KTWC.FF.W.0002.000000T0000Z-140705T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
649 PM MST FRI JUL 4 2014

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 845 PM MST FOR
SOUTHEASTERN PINAL AND EXTREME NORTHEASTERN PIMA COUNTIES...

AT 647 PM MST...RAINFALL HAS SUBSIDED ON THE NORTH SIDE OF THE 
CATALINAS...HOWEVER FLASH FLOODING CONTINUES AFTER LOCALIZED 
RAINFALL IN EXCESS OF 2.5 INCHES. FLASH FLOODING WILL CONTINUE 
ESPECIALLY IN THE MIDDLE AND UPPER CDO BASINS. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CAMPO BONITO
AND BIOSPHERE 2

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

&&

LAT...LON 3260 11086 3259 11066 3243 11059 3243 11075
      3241 11093

$$

GL

604 
WGUS75 KTWC 050339
FFSTWC

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE TUCSON AZ
839 PM MST FRI JUL 4 2014

AZC019-021-050348-
/O.EXP.KTWC.FF.W.0002.000000T0000Z-140705T0345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
PIMA AZ-PINAL AZ-
839 PM MST FRI JUL 4 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 845 PM MST FOR SOUTHEASTERN
PINAL AND EXTREME NORTHEASTERN PIMA COUNTIES...

FLASH FLOODING FROM EARLIER HEAVY RAINFALL HAS SUBSIDED...THUS THE 
FLASH FLOOD WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER...ELEVATED 
FLOWS WILL CONTINUE OVERNIGHT ESPECIALLY IN THE CDO WASH. 

LAT...LON 3260 11086 3259 11066 3243 11059 3243 11075
      3241 11093

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 4, 5:11 PM MST	Special Weather Statement	TWC	Cochise	49 min
Jul 5, 11:53 AM MST	Severe Thunderstorm Warning	TWC	Pima	52 min
Jul 5, 3:55 PM MST	Special Weather Statement	TWC		35 min
Jul 5, 4:18 PM MST	Severe Thunderstorm Warning	TWC	Pima	42 min
Jul 5, 4:38 PM MST	Flash Flood Warning	TWC	Pima	82 min
Jul 5, 4:56 PM MST	Severe Thunderstorm Warning	TWC	Pima	49 min

Nearby

Flash Flood Warnings in Arizona, 2014 Every 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.