Alert archive / Arizona / Flash Flood Warnings in 1993

Flash Flood Warning 4, NWS Tucson, AZ

January 13, 1993Pima County, Arizona

NWS Tucson, AZ issued this flash flood warning at Jan 13, 1993, 9:26 AM MST for Pima County, Arizona. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued: Jan 13, 1993, 9:26 AM MST (16:26 UTC)
Expired: Jan 13, 1993, 7:40 PM MST
In force: 10 hr
Issued by: NWS Tucson, AZ
Area: Whole counties

County Pima County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 4.4 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 667 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 322 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.

000 
TTAA00 KTUS 131631 COR
FFWTUS
AZC019-140330-

BULLETIN - EBS ACTIVATION REQUESTED
FLOOD WARNING...CORRECTION
NATIONAL WEATHER SERVICE TUCSON ARIZONA
926 AM MST WED JAN 13 1993

THE NATIONAL WEATHER SERVICE IN TUCSON ARIZONA HAS ISSUED A
FLOOD WARNING EFFECTIVE UNTIL  800 PM MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH CENTRAL ARIZONA

   ...EASTERN PIMA COUNTY

...FLOOD AND FLASH FLOOD WATCH CONTINUES FOR CENTRAL AND SOUTHEAST
ARIZONA THROUGH TODAY...

AT 9 AM...SHOWERS CONTINUED OVER EASTERN PIMA...NORTHWEST
COCHISE...EASTERN PINAL AND SOUTHWEST GRAHAM...AND SOME OF THEM WERE
QUITE HEAVY.  IN ADDITION...RECENT REPORTS INDICATE ABOVE FREEZING
TEMPERATURES ON MT. BIGELOW NORTHEAST OF TUCSON WHERE A FOOT OF SNOW
ACCUMULATED OVER SATURDAY AND SUNDAY.  AT 845...WATER WAS BEGINNING TO
CASCADE DOWN THE MOUNTAIN SIDE.

WEATHER CONDITIONS INDICATED THAT MORE SHOWER ACTIVITY CAN BE EXPECTED
AS THE DAY PROGRESSES...MAYBE EVEN SOME THUNDERSTORMS.  AND WE EXPECT
SOME ADDITIONAL WARMING AT THE HIGHER ELEVATIONS AS WELL.

ALL OF THESE PARAMETERS SUGGEST THAT THE RIVERS...STREAMS...AND WASHES
WILL CONTINUE TO RISE THROUGH THE DAY AND CONSIDERABLE FLOODING IN
EASTERN PIMA COUNTY WILL LIKELY OCCUR.

ANY AREAS THAT WERE AFFECTED LAST THURSDAY AND FRIDAY OR THIS PAST
SUNDAY WILL LIKELY BE AFFECTED AGAIN...AND SHOULD DEFINATELY BE AVOIDED
...BUT LOTS OF OTHER AREAS MAY ALSO HAVE PROBLEMS.  BRIDGES AND ALL FLOO
PRONE AREAS MUST BE WATCHED CLOSELY WITH APPROPIATE PRECAUTIONS TAKEN.
AND REMEMBER...EVEN IF RAINFALL STOPS...RUNOFF MAY STILL BE FILLING THE
RIVERS...STREAMS...AND WASHES. SO USE SPECIAL CAUTION ANYWHERE IN THE
VICINITY OF A THREATENING AREA THROUGH THE DAY.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL
ONE...ON FOOT.  TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

SHOGREN

Nearby

Flash Flood Warnings in Arizona, 1993 Every flash flood warning in 1993

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.