Alert archive / Utah / Flash Flood Warnings in 1996

Flash Flood Warning 5, NWS Salt Lake City, UT

July 26, 1996Iron County, Utah

NWS Salt Lake City, UT issued this flash flood warning at Jul 26, 1996, 5:45 PM MDT for Iron County, Utah. 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 26, 1996, 5:45 PM MDT (23:45 UTC)
Expired
Jul 26, 1996, 6:30 PM MDT
In force
45 min
Issued by
NWS Salt Lake City, UT
Area
Whole counties

County Iron County, UT

The nearest sounding before it

Mercury/Desert R, NV (KDRA), launched 12:00Z, 11.8 hours before the alert went out and 277 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, Mercury/Desert R, NV at 12:00Z on 1996-07-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 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, Mercury/Desert R, NV at 12:00Z on 1996-07-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -27 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
44 J/kg
Mixed-layer CIN
-272 J/kg
Mixed-layer LCL
3656 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-27 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 26, 2:55 PM MDT, 2 hours 50 minutes before
UTZ011-013-262330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
250 PM MDT FRI JUL 26 1996

     ...STRONG THUNDERSTORMS DEVELOPING NORTH OF LAKE POWELL...

LAS VEGAS DOPPLER RADAR ALONG WITH SATELLITE PHOTOS AND LIGHTNING
DETECTION EQUIPMENT SHOW STRONG THUNDERSTORMS DEVELOPING OVER
NORTHERN KANE COUNTY THIS AFTERNOON.  THESE THUNDERSTORMS ARE MOVING
TO THE SOUTHEAST AND MAY IMPACT THE LAKE POWELL RECREATIONAL AREA BY
400 PM.  THE MAIN THREAT FROM THESE STORMS WILL BE STRONG GUSTY WINDS
...SO BOATERS ON THE LAKE SHOULD MOVE TO SHORE WHEN THUNDERSTORMS
APPROACH.  BRIEF HEAVY RAIN MAY ALSO ACCOMPANY THESE STORMS...SO
NORMALLY DRY WASHES MAY RAPIDLY FILL WITH WATER ESPECIALLY ALONG THE
KAIPAROWITS PLATEAU.

PERSONS NEAR LAKE POWELL SHOULD KEEP AN EYE TO THE SKY THIS AFTERNOON
AND EVENING...AND MOVE TO A PLACE OF SAFETY WHEN THUNDERSTORMS
APPROACH.
END
Special weather statement, Jul 26, 5:21 PM MDT, 24 minutes before
UTZ006-007-008-011-012-013-270500-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
515 PM MDT FRI JUL 26 1996

     ...STRONG THUNDERSTORMS OVER SOUTHERN UTAH...

STRONG THUNDERSTORMS WITH BRIEF HEAVY RAINS CONTINUE TO AFFECT
SOUTHERN UTAH THIS AFTERNOON.  AT 5PM MDT THE STRONGEST STORMS
STRETCHED FROM LAKE POWELL AND KANAB...ACROSS BRYCE CANYON...THEN
NORTHWARD TO I-70.  ADDITIONAL THUNDERSTORMS WILL AFFECT MOST OTHER
PARTS OF SOUTHERN UTAH LATER THIS EVENING...BEFORE TAPERING OFF AFTER
SUNSET.

BOATERS ON LAKE POWELL SHOULD EXERCISE CAUTION FOR THE REMAINDER OF
THE DAY AND EVENING AS THESE STORMS HAVE THE POTENTIAL TO PRODUCE
STRONG GUSTY WINDS AND ROUGH WATERS.  ALSO...CAMPERS AND
RECREATIONALISTS SHOULD AVOID DRY WASHES AND BE WATCHFUL ON SLICKROCK
AREAS FOR POSSIBLE FLASH FLOODING.

END

The office that day

Everything else NWS Salt Lake City, UT issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 26, 5:45 PM MDTSevere Thunderstorm WarningSLCIron45 min

Nearby

Flash Flood Warnings in Utah, 1996Every flash flood warning in 1996

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.