Alert archive / Arizona / Flash Flood Warnings in 1997

Flash Flood Warning 2, NWS Tucson, AZ

May 19, 1997Pinal County, Arizona

NWS Tucson, AZ issued this flash flood warning at May 19, 1997, 2:46 PM MST for Pinal County, Arizona. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 19, 1997, 2:46 PM MST (21:46 UTC)
Expired
May 19, 1997, 3:50 PM MST
In force
64 min
Issued by
NWS Tucson, AZ
Area
Whole counties

County Pinal County, AZ

The nearest sounding before it

Tuscon, AZ (KTUS), launched 12:00Z, 9.8 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-pSkew-T log-p diagram, Tuscon, AZ at 12:00Z on 1997-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 295 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tuscon, AZ at 12:00Z on 1997-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 5 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
295 J/kg
Mixed-layer CIN
-196 J/kg
Mixed-layer LCL
2139 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
5 m²/s²
0-3 km storm-relative helicity
12 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 192149
FFWTUS
AZC021-192250-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE TUCSON AZ
246 PM MST MON MAY 19 1997

THE NATIONAL WEATHER SERVICE IN TUCSON AZ HAS ISSUED A
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 350 PM
MST
FOR PEOPLE IN THE FOLLOWING LOCATION...

IN SOUTH CENTRAL ARIZONA

   ...SOUTHEASTERN PINAL COUNTY
 
AT 244 PM MST...DOPPLER RADAR AND SPOTTER REPORTS INDICATED A
SEVERE THUNDERSTORM WITH EXTREMELY HEAVY RAINFALL 8 MILES EAST OF
ORACLE OR OVER SAN MANUEL MOVING NORTHEAST AT 10 MPH.

SOME LOCATIONS IN THE PATH OF THIS STORM ARE...
MAMMOTH                 BY 254 PM MST

THIS STORM HAS PRODUCED LOCAL STREET FLOODING AND LARGE HAIL IN SAN
MANUEL. HEAVY RAIN OCCURRED IN THIS ARE EARLIER THIS AFTERNOON.

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 11:59 AM MSTSevere Thunderstorm WarningTWCPinal46 min
May 19, 12:53 PM MSTSevere Thunderstorm WarningTWCPinal47 min
May 19, 1:36 PM MSTSevere Thunderstorm WarningTWCPinal29 min
May 19, 2:12 PM MSTFlash Flood WarningTWCPinal93 min
May 19, 2:46 PM MSTSevere Thunderstorm WarningTWCPinal64 min

Nearby

Flash Flood Warnings in Arizona, 1997Every flash flood warning in 1997

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.