Alert archive / Arizona / Flash Flood Warnings in 1997

Flash Flood Warning 9, NWS Las Vegas, NV

July 28, 1997Mohave County, Arizona

NWS Las Vegas, NV issued this flash flood warning at Jul 28, 1997, 12:15 PM MST for Mohave County, Arizona. It was in force for 45 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: Jul 28, 1997, 12:15 PM MST (19:15 UTC)
Expired: Jul 28, 1997, 1:00 PM MST
In force: 45 min
Issued by: NWS Las Vegas, NV
Area: Whole counties

County Mohave County, AZ

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 7.3 hours before the alert went out and 185 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: 39 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 1052 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 24 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 KLAS 281916
FFWLAS
AZC015-282000-

BULLETIN - EBS ACTIVATION REQUESTED
SEVERE THUNDERSTORM AND FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LAS VEGAS NV
1215 PM PDT MON JUL 28 1997

THE NATIONAL WEATHER SERVICE IN LAS VEGAS NV HAS ISSUED A SEVERE
THUNDERSTORM AND FLASH FLOOD WARNING EFFECTIVE UNTIL 100 PM PDT/
100 PM MST FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN NORTHWEST ARIZONA

  ...EXTREME WESTERN MOHAVE COUNTY

AT 1210 PM PDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
LOCATED 10 MILES SOUTH OF TEMPLE BAR.  THIS STORM WAS MOVING
NORTH AT 20-25 MPH AND IS EXPECTED TO AFFECT THE TEMPLE BAR AND
CALLVILLE BAY AREAS BETWEEN 1230 AND 1245 PM PDT.

DAMAGING WINDS IN EXCESS OF 60 MPH...HAIL UP TO 1 INCH IN
DIAMETER...AND BRIEF PERIODS OF HEAVY RAINFALL CAN BE EXPECTED
WITH THIS STORM.

RUNK

The office that day

Everything else NWS Las Vegas, NV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 28, 12:15 PM MST	Severe Thunderstorm Warning	VEF	Mohave	45 min
Jul 28, 12:55 PM MST	Flash Flood Warning	VEF	Mohave	65 min
Jul 28, 12:55 PM MST	Severe Thunderstorm Warning	VEF	Mohave	65 min
Jul 28, 1:37 PM MST	Severe Thunderstorm Warning	VEF	Mohave	53 min
Jul 28, 2:28 PM MST	Severe Thunderstorm Warning	VEF	Mohave	62 min

Nearby

Flash Flood Warnings in Arizona, 1997 Every 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.