Alert archive / Arizona / Flash Flood Warnings in 1992

Flash Flood Warning 4, NWS Phoenix, AZ

July 22, 1992Pinal County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Jul 22, 1992, 3:00 PM MST for Pinal County, Arizona. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Jul 22, 1992, 3:00 PM MST (22:00 UTC)
Expired: Jul 22, 1992, 5:00 PM MST
In force: 2 hr
Issued by: NWS Phoenix, AZ
Area: Whole counties

County Pinal County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 10.0 hours before the alert went out and 92 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: 883 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1582 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 5 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 KPHX 222210
FFWPHX
AZC021-230000-
 
BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX ARIZONA
300 PM MST WED JUL 22 1992
 
THE NATIONAL WEATHER SERVICE IN PHOENIX ARIZONA HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
EFFECTIVE UNTIL  500 PM MST
FOR THE FOLLOWING LOCATIONS......
 
IN SOUTH CENTRAL ARIZONA
 
   ...CENTRAL AND EASTERN PINAL COUNTY...
 
AT 255 PM WEATHER RADAR DETECTED VERY LARGE THUNDERSTORMS
DEVELOPING IN CENTRAL AND EASTERN PINAL COUNTY NEAR THE CITIES
OF CASA GRANDE...FLORENCE...COOLIDGE...ELOY...HAYDEN...
WINKELMAN...AND OTHER NEARBY AREAS.  THIS ALSO INCLUDES SECTIONS
OF INTERSTATE 10 BETWEEN TUCSON AND CASA GRANDE.
 
RADAR INDICATED SOME OF THESE STORMS WERE LIKELY IN THE SEVERE
CATEGORY...MEANING WINDS IN EXCESS OF 57 MILES PER HOUR...WHICH
COULD RESULT IN STRUCTURAL DAMAGE.  THUNDERSTORMS WERE MOVING NORTH
AT 10 TO 15 MPH.
 
ADDITIONALLY...THE ATMOSPHERE CONTAINS A LOT OF WATER WHICH COULD
LEAD TO HEAVY RAINS RESULTING IN FLOOD OR FLASH FLOODING.
 
IF THREATENING WEATHER APPROACHES SEEK SHELTER IMMEDIATELY.  IF
STRONG WINDS DEVELOP GO TO THE INTERIOR OF A BUILDING TO AVOID
FLYING GLASS AND DEBRIS.
 
URBAN FLOODING IS OVERFLOW OF CITY STREETS AND DRAINAGE SYSTEMS...
ENOUGH TO FLOOD RESIDENCES AND BUSINESSES AND CLOSE CITY STREETS.
POSTPONE ANY UNNECESSARY DRIVING UNTIL THE STORM IS OVER.
 
FLASH FLOODING IS MOST DANGEROUS IN THE MOUNTArINS...ALONG STREAMS IN
NARROW STEEP WALLED CANYONS. MANY DEATHS HAVE RESULTED WHEN MOTORISTS
TRIED TO OUTRACE A FLOOD IN THESE CANYONS. CLIMB TO SAFETY IF A FLOOD
DEVELOPS.
 
VASQUEZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 3:00 PM MST	Severe Thunderstorm Warning	PSR	Pinal	2 hr
Jul 22, 4:37 PM MST	Flash Flood Warning	PSR	Maricopa, Pinal	2 hr
Jul 22, 4:37 PM MST	Severe Thunderstorm Warning	PSR	Maricopa, Pinal	2 hr

Nearby

Flash Flood Warnings in Arizona, 1992 Every flash flood warning in 1992

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.