Alert archive / Wyoming / Flash Flood Warnings in 1991

Flash Flood Warning 14, NWS Cheyenne, WY

June 2, 1991Goshen County, Laramie County, Wyoming

NWS Cheyenne, WY issued this flash flood warning at Jun 2, 1991, 10:55 PM MDT for Goshen County, Laramie County, Wyoming. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued
Jun 2, 1991, 10:55 PM MDT (04:55 UTC)
Expired
Jun 3, 1991, 1:00 AM MDT
In force
2 hr
Issued by
NWS Cheyenne, WY
Area
Whole counties

Counties Goshen County, WY, Laramie County, WY

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 4.9 hours before the alert went out and 230 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, Denver, CO at 00:00Z on 1991-06-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Denver, CO at 00:00Z on 1991-06-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -45 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1410 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
-45 m²/s²
0-3 km storm-relative helicity
72 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, Jun 2, 6:17 PM MDT, 4 hours 38 minutes before
NEZ001-005-011-020130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
615 PM MDT SUN JUN 2 1991

...THUNDERSTORMS OVER THE SOUTHWEST NEBRASKA PANHANDLE...

AT 610 PM MDT...RADAR INDICATED THUNDERSTORMS SCATTERED ACROSS WESTERN
KIMBALL...WESTERN BANNER AND SOUTHWEST SCOTTS BLUFF COUNTIES OF THE
SOUTHERN AND CENTRAL NEBRASKA PANHANDLE.  THE STRONGEST STORM WAS 35
MILES SOUTHWEST OF SCOTTSBLUFF NEBRASKA OVER WESTERN BANNER COUNTY OF
THE CENTRAL NEBRASKA PANHANDLE.  ALL THE STORM WERE MOVING TO THE
NORTHWEST AT 25 MPH.

BRIEF HEAVY RAIN...STRONG GUSTY WIND AND SMALL HAIL ARE POSSIBLE WITH
THESE STORMS AS THEY MOVE NORTHWEST ACROSS KIMBALL...BANNER AND
SCOTTS BLUFF COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 730 PM MDT.

AT 6 PM MDT SKIES WERE MOSTLY CLOUDY TO CLOUDY ACROSS THE NEBRASKA
PANHANDLE WITH TEMPERATURES RANGEING FROM 71 DEGREES AT SIDNEY TO 77
DEGREES AT CHADRON NEBRASKA.  THE WIND WAS GENERALLY FROM THE SOUTH!EAST
AT 10 TO 20 MPH WITH SOME GUSTS TO 30 MPH.
KIRK
Special weather statement, Jun 2, 7:29 PM MDT, 3 hours 26 minutes before
NEZ001-005-011-020230-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
725 PM MDT SUN JUN 2 1991

...THUNDERSTORMS OVER THE SOUTHWEST NEBRASKA PANHANDLE...

AT 725 PM MDT...RADAR INDICATED THUNDERSTORMS SCATTERED ACROSS KIMBALL
...BANNER AND SOUTHWEST SCOTTS BLUFF COUNTIES OF THE SOUTHERN AND
CENTRAL NEBRASKA PANHANDLE.  THE STRONGEST STORM WAS 35 MILES SOUTH OF
SCOTTSBLUFF NEBRASKA OVER THE BANNER/KIMBALL COUNTY LINE.  ALL THE
STORMS WERE MOVING TO THE NORTHWEST AT 25 MPH.

AT 720 PM MDT KIMBALL COUNTY CIVIL DEFENSE REPORTED VERY HEAVY RAIN AND
1/4 TO 1/2 INCH HAIL ON INTERSTATE 80 NEAR BUSHNELL OR 45 MILES WEST OF
SIDNEY NEBRASKA.

BRIEF HEAVY RAIN...STRONG GUSTY WINDw AND HAIL ARE POSSIBLE WITH THESE
STORMS AS THEY MOVE NORTHWEST ACROSS KIMBALL...BANNER AND SCOTTS BLUFF
COUNTY OF THE NEBRASKA PANHANDLE UNTIL 830 PM MDT.
KIRK
Special weather statement, Jun 2, 7:44 PM MDT, 3 hours 11 minutes before
WYZ012-030215-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
744 PM MDT SUN JUN 2 1991

...A STRONG THUNDERSTORM WAS MOVING INTO THE LA GRANGE AREA OF SOUTHERN
GOSHEN COUNTY AT 740 PM...

RADAR SHOWED A STRONG THUNDERSTORM ABOUT 30 MILES SOUTH OF TORRINGTON
MOVING RIGHT TOWARDS THE TOWN OF LA GRANGE.  HAIL...GUSTY WINDS...AND
VERY HEAVY RAIN ARE LIKELY WITH THIS STORM.

PEOPLE IN SOUTHERN GOSHEN COUNTY...ESPECIALLY IN LA GRANGE...SHOULD GO
TO A SAFE PLACE SUCH AS A BASEMENT AND WAIT FOR THE STORM TO PASS.

JAD
Special weather statement, Jun 2, 8:16 PM MDT, 2 hours 39 minutes before
WYZ016-017-030300-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
815 PM MDT SUN JUN 2 1991

...THE THUNDERSTORM WATCH FOR THE SOUTHEAST CORNER OF WYOMING HAS BEEN
ALLOWED TO EXPIRE...

AT 805 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE
THUNDERSTORMS IN SOUTHEAST WYOMING WERE WEAKENING.  THERFORE...THE
SEVERE THUNDERSTORM WATCH FOR THE SOUTHEAST CORNER OF WYOMING HAS
BEEN ALLOWED TO EXPIRE.

LIGHT TO MODERATE RAINFALL WILL CONTINUE IN SOUTHEAST WYOMING THROUGH
MIDNIGHT.  WITH THE GROUND ALREADY SATURATED...FLOODING OF ROADWAYS
AND LOW LYING AREAS CAN BE EXPECTED THROUGH THE EVENING.

PEOPLE IN SOUTHEAST WYOMING ARE REMINDED THAT A FLASH FLOOD WATCH
RELMAINS IN EFFECT UNTIL 200 AM MDT MONDAY MORNING. IF YOU ENCOUNTER
RAPIDLY RISING WATERS..CLIMB TO HIGHER GROUND IMMEDIATELY.  DO NOT
ATTEMPT TO CROSS FAST MOVING WATERS OR DRIVE THROUGH WATER OF
UNKNOWN DEPTH.

VIRGILLITO
Special weather statement, Jun 2, 8:20 PM MDT, 2 hours 35 minutes before
WYZ016-017-030300-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE CHEYENNE WY
819 PM MDT SUN JUN 2 1991

...THE SEVERE THUNDERSTORM WATCH FOR THE SOUTHEAST CORNER OF WYOMING
HAS BEEN ALLOWED TO EXPIRE...

AT 805 PM MDT...NATIONAL WEATHER SERVICE RADAR INDICATED THAT THE
THUNDERSTORMS IN SOUTHEAST WYOMING WERE WEAKENING.  THERFORE...THE
SEVERE THUNDERSTORM WATCH FOR THE SOUTHEAST CORNER OF WYOMING HAS
BEEN ALLOWED TO EXPIRE.

LIGHT TO MODERATE RAINFALL WILL CONTINUE IN SOUTHEAST WYOMING THROUGH
MIDNIGHT.  WITH THE GROUND ALREADY SATURATED...FLOODING OF ROADWAYS
AND LOW LYING AREAS CAN BE EXPECTED THROUGH THE EVENING.

PEOPLE IN SOUTHEAST WYOMING ARE REMINDED THAT A FLASH FLOOD WATCH
REMAINS IN EFFECT UNTIL 200 AM MDT MONDAY MORNING. IF YOU ENCOUNTER
RAPIDLY RISING WATERS..CLIMB TO HIGHER GROUND IMMEDIATELY.  DO NOT
ATTEMPT TO CROSS FAST MOVING WATERS OR DRIVE THROUGH WATER OF
UNKNOWN DEPTH.

CORRECTED FORV OMMISION OF SEVERE IN HIGHLIGHT SENTENCE

VIRGILLITO
Special weather statement, Jun 2, 8:42 PM MDT, 2 hours 13 minutes before
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The office that day

Everything else NWS Cheyenne, WY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 3, 12:52 PM MDTSevere Thunderstorm WarningCYSBox Butte, Dawes38 min
Jun 3, 1:23 PM MDTTornado WarningCYSSioux37 min
Jun 3, 1:56 PM MDTSevere Thunderstorm WarningCYSDawes34 min
Jun 3, 4:49 PM MDTTornado WarningCYSBanner26 min
Jun 3, 5:09 PM MDTSevere Thunderstorm WarningCYSSheridan36 min
Jun 3, 5:20 PM MDTTornado WarningCYSBanner25 min
Jun 2, 8:10 PM MDTFlash Flood WarningCYSLaramie3 hr
Jun 2, 8:38 PM MDTFlash Flood WarningCYSGoshen2 hr

Nearby

Flash Flood Warnings in Wyoming, 1991Every flash flood warning in 1991

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.