Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993

Severe Thunderstorm Warning 33, NWS Cheyenne, WY

June 12, 1993Cheyenne County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 12, 1993, 5:59 PM MDT for Cheyenne County, Nebraska. It was in force for 31 min.

The area

The counties it named.

The facts

Issued
Jun 12, 1993, 5:59 PM MDT (23:59 UTC)
Expired
Jun 12, 1993, 6:30 PM MDT
In force
31 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Cheyenne County, NE

The nearest sounding before it

Denver, CO (KDEN), launched 12:00Z, 12.0 hours before the alert went out and 151 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 12:00Z on 1993-06-12Temperature 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 12:00Z on 1993-06-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 50 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2947 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
50 m²/s²
0-3 km storm-relative helicity
100 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 severe thunderstorm 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 12, 3:10 PM MDT, 2 hours 49 minutes before
WYZ071-072-073-122200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
310 PM MDT SAT JUN 12 1993

A THUNDERSTORM LOCATED JUST WEST OF THE CITY OF CHEYENNE WILL BE MOVING
NORTHEAST AT 25 MILES AN HOUR. THE STORM WILL MOVE OVER THE CITY BETWEEN
315 PM TO 345 PM AND CONTINUE NORTHEAST INTO EAST CENTRAL LARAMIE COUNTY.

BRIEF HEAVY RAIN AND LIGHTNING ARE EXPECTED FROM THIS STORM AS IT MOVES
ACROSS THE CITY OF CHEYENNE.

LAUZE
Special weather statement, Jun 12, 3:10 PM MDT, 2 hours 49 minutes before
WYZ071-072-073-122200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
310 PM MDT SAT JUN 12 1993

A THUNDERSTORM LOCATED JUST WEST OF THE CITY OF CHEYENNE WILL BE MOVING
NORTHEAST AT 25 MILES AN HOUR. THE STORM WILL MOVE OVER THE CITY BETWEEN
315 PM TO 345 PM AND CONTINUE NORTHEAST INTO EAST CENTRAL LARAMIE COUNTY.

BRIEF HEAVY RAIN AND LIGHTNING ARE EXPECTED FROM THIS STORM AS IT MOVES
ACROSS THE CITY OF CHEYENNE.

LAUZE
Special weather statement, Jun 12, 4:34 PM MDT, 1 hour 25 minutes before
NEZ001-005-011-122330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
434 PM MDT SAT JUN 12 1993

...TORNADO WATCH 422 IS IN EFFECT FOR THE SOUTHERN NEBRASKA PNHANDLE...

A TORNADO WATCH WAS ISSUED FOR A LARGE AREA UNTIL 1000 PM MDT THIS
EVENING.  INTERSTATE 80...KIMBALL...CHEYENNE...AND DEUEL COUNTIES OF THE
NEBRASKA PANHANDLE WERE INCLUDED IN THE TORNADO WATCH.

AT 432 PM MDT...SCATTERED SHOWERS AND THUNDERSTORMS EXTENDED FROM 30
MILES WEST OF CHADRON NEBRASKA TO 25 MILES EAST OF CHEYENNE WYOMING...
ACROSS THE WESTERN NEBRASKA PANHANDLE AND PORTIONS OF EASTERN WYOMING.
THE AREA OF STORMS WAS MOVING EAST AROUND 15 MPH...WHILE INDIVIDUAL
STORMS WERE MOVING NORTHEAST AROUND 25 MPH.

BRIEF HEAVY RAIN...GUSTY WINDS...AND SMALL HAIL ARE POSSIBLE WITH THESE
STORMS IN THE WESTERN HALF OF THE NEBRASKA PANHANDLE UNTIL 530 PM.
.
TORNADO WATCH 422 REMAINS IN EFFECT FOR KIMBALL...CHEYENNE...AND DEUEL
COUNTIES UNTIL 1000 PM MDT THIS EVENING.
PFEIFFER
Special weather statement, Jun 12, 4:34 PM MDT, 1 hour 25 minutes before
NEZ001-005-011-122330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
434 PM MDT SAT JUN 12 1993

...TORNADO WATCH 422 IS IN EFFECT FOR THE SOUTHERN NEBRASKA PNHANDLE...

A TORNADO WATCH WAS ISSUED FOR A LARGE AREA UNTIL 1000 PM MDT THIS
EVENING.  INTERSTATE 80...KIMBALL...CHEYENNE...AND DEUEL COUNTIES OF THE
NEBRASKA PANHANDLE WERE INCLUDED IN THE TORNADO WATCH.

AT 432 PM MDT...SCATTERED SHOWERS AND THUNDERSTORMS EXTENDED FROM 30
MILES WEST OF CHADRON NEBRASKA TO 25 MILES EAST OF CHEYENNE WYOMING...
ACROSS THE WESTERN NEBRASKA PANHANDLE AND PORTIONS OF EASTERN WYOMING.
THE AREA OF STORMS WAS MOVING EAST AROUND 15 MPH...WHILE INDIVIDUAL
STORMS WERE MOVING NORTHEAST AROUND 25 MPH.

BRIEF HEAVY RAIN...GUSTY WINDS...AND SMALL HAIL ARE POSSIBLE WITH THESE
STORMS IN THE WESTERN HALF OF THE NEBRASKA PANHANDLE UNTIL 530 PM.
.
TORNADO WATCH 422 REMAINS IN EFFECT FOR KIMBALL...CHEYENNE...AND DEUEL
COUNTIES UNTIL 1000 PM MDT THIS EVENING.
PFEIFFER

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 12, 4:48 PM MDTSevere Thunderstorm WarningCYSMorrill27 min
Jun 12, 5:10 PM MDTTornado WarningCYSMorrill35 min
Jun 12, 5:44 PM MDTSevere Thunderstorm WarningCYSMorrill31 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1993Every severe thunderstorm warning in 1993

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.