Alert archive / Arizona / Flash Flood Warnings in 1998

Flash Flood Warning 15, NWS Phoenix, AZ

August 11, 1998La Paz County, Yuma County, Arizona

NWS Phoenix, AZ issued this flash flood warning at Aug 11, 1998, 3:00 PM MST for La Paz County, Yuma County, Arizona. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 11, 1998, 3:00 PM MST (22:00 UTC)
Expired
Aug 11, 1998, 5:00 PM MST
In force
2 hr
Issued by
NWS Phoenix, AZ
Area
Whole counties

Counties La Paz County, AZ, Yuma County, AZ

The nearest sounding before it

Yuma Intl Airpor, AZ (KYUM), launched 12:00Z, 10.0 hours before the alert went out and 90 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, Yuma Intl Airpor, AZ at 12:00Z on 1998-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 263 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, Yuma Intl Airpor, AZ at 12:00Z on 1998-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -13 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
263 J/kg
Mixed-layer CIN
-268 J/kg
Mixed-layer LCL
2167 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-13 m²/s²
0-3 km storm-relative helicity
54 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 112202
FFWPHX
AZC012-027-120000-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PHOENIX AZ
300 PM MST TUE AUG 11 1998


THE NATIONAL WEATHER SERVICE IN PHOENIX HAS ISSUED A

*  FLASH FLOOD WARNING FOR
   WEST CENTRAL LA PAZ COUNTY IN WEST CENTRAL ARIZONA
   NORTHERN YUMA COUNTY IN SOUTHWESTERN ARIZONA

*  UNTIL 500 PM MST

*  RADAR ESTIMATES RAINFALL AMOUNTS OF BETWEEN ONE AND TWO
   INCHES PER HOUR WAS FALLING ALONG AND EAST OF U.S. HIGHWAY 95
   SOUTH OF QUARTZSITE. THIS WILL CAUSE SOME FLOODING ALONG HIGHWAY
   95 ESPECIALLY IN DIPS AND NEAR WASHES NEAR THE HIGHWAY.

Nearby

Flash Flood Warnings in Arizona, 1998Every flash flood warning in 1998

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.