Alert archive / Utah / Flash Flood Warnings in 1997

Flash Flood Warning 7, NWS Salt Lake City, UT

July 22, 1997Iron County, Kane County, Washington County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 22, 1997, 5:40 PM MDT for Iron County, Kane County, Washington County, Utah. It was in force for 3 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
Jul 22, 1997, 5:40 PM MDT (23:40 UTC)
Expired
Jul 22, 1997, 9:00 PM MDT
In force
3 hr
Issued by
NWS Salt Lake City, UT
Area
Whole counties

Counties Iron County, UT, Kane County, UT, Washington County, UT

The nearest sounding before it

Flgstf/Belemont, AZ (KFGZ), launched 12:00Z, 11.7 hours before the alert went out and 268 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, Flgstf/Belemont, AZ at 12:00Z on 1997-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 96 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Flgstf/Belemont, AZ at 12:00Z on 1997-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 square meters per square second.193958Sfc1 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
96 J/kg
Mixed-layer CIN
-65 J/kg
Mixed-layer LCL
978 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KSLC 222342
FFWSLC
UTC021-025-053-230300-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
540 PM MDT TUE JUL 22 1997

THE NATIONAL WEATHER SERVICE IN SALT LAKE CITY UT HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 900 PM MDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN SOUTHWESTERN UTAH

   ...EASTERN IRON COUNTY
   ...EASTERN WASHINGTON COUNTY
   ...WESTERN KANE COUNTY
 
HEAVY RAIN HAS BEEN REPORTED FROM ZION NATIONAL PARK AND DOPPLER
RADAR INDICATES RAIN WILL CONTINUE FOR THROUGH 7PM. THE RAINFALL
WILL WORK ITS WAY DOWN FROM THE HIGH COUNTRY THROUGH NARROW CANYONS
AND DRY WASHES THROUGH THE EVENING.

ALL HIKERS AND CAMPERS SHOULD STAY OUT OF FLASH FLOOD PRONE ARES
SUCH AS NORMALLY DRY WASHES AND NARROW CANYONS.  DO NOT ATTEMPT TO
DRIVE THROUGH MOVING WATER SINCE ONLY 2 FEET OF WATER CAN FLOAT A
VEHICLE.

DUNN

Nearby

Flash Flood Warnings in Utah, 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.