Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 151, NWS Cheyenne, WY

June 27, 1991Scotts Bluff County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 27, 1991, 10:56 PM MDT for Scotts Bluff County, Nebraska. It was in force for 34 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 27, 1991, 10:56 PM MDT (04:56 UTC)
Expired
Jun 27, 1991, 11:30 PM MDT
In force
34 min
Issued by
NWS Cheyenne, WY
Area
Whole counties

County Scotts Bluff County, NE

What was reported inside it

TimeReportWhereRemark
Jun 27, 11:10 PM MDTThunderstorm Wind 0Scotts Bluff, NE

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Denver, CO (KDEN), launched 00:00Z, 4.9 hours before the alert went out and 224 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 1991-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 30 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, Denver, CO at 00:00Z on 1991-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 19 square meters per square second.19395878Sfc1 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
30 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
3617 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
19 m²/s²
0-3 km storm-relative helicity
223 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 27, 7:04 PM MDT, 3 hours 52 minutes before
WYZ012-017-280145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
704 PM MDT THU JUN 27 1991

SINCE 600 PM...WIDELY SCATTERED THUNDERSTORMS HAD DEVELOPED RAPIDLY
OVER THE SOUTHEAST CORNER OF WYOMING.  AT 655 PM...THE STRONGEST
STORM WAS JUST NORTHWEST OF PINE BLUFFS OR SOME 35 MILES EAST OF
CHEYENNE.  ANOTHER STRONG STORM WAS ABOUT 15 MILES SOUTHWEST OF
TORRINGTON...IN SOUTHERN GOSHEN COUNTY.

ALL OF THE THUNDERSTORMS WERE MOVING NORTH AT 20 MILES AN HOUR.

SCATTERED THUNDERSTORMS WILL CONTINUE IN THE SOUTHEAST CORNER OF
WYOMING UNTIL AROUND 10 PM THIS EVENING.  A FEW OF THESE STORMS MAY
PRODUCE BRIEF HEAVY RAIN...SMALL HAIL AND GUSTY WINDS.

HATTEN
Special weather statement, Jun 27, 7:12 PM MDT, 3 hours 44 minutes before
NEZ001-005-011-280200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
708 PM MDT THU JUN 27 1991

...STRONG THUNDERSTORM IN THE SOUTHERN NEBRASKA PANHANDLE...

AT 706 PM MDT...RADAR INDICATED A STRONG THUNDERSTORM 15 MILES WEST OF
KIMBALL NEBRASKA...OR 40 MILES SOUTHWEST OF SCOTTSBLUFF...IN KIMBALL
COUNTY.  THE STORM WAS MOVING TO THE NORTH AT 20 MILES PER HOUR.

HEAVY RAIN...GUSTY WIND...SMALL HAIL AND LIGHTNING ARE POSSIBLE W=ITH THE
THUNDERSTORM IN KIMBALL AND BANNER COUNTIES OF THE NEBRASKA PANHANDLE
UNTIL 815 PM MDT.                                        ...EMANUEL...

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 27, 7:24 PM MDTSevere Thunderstorm WarningCYSBanner, Kimball36 min
Jun 27, 8:01 PM MDTTornado WarningCYSBanner29 min
Jun 27, 8:32 PM MDTTornado WarningCYSBanner28 min
Jun 27, 8:57 PM MDTSevere Thunderstorm WarningCYSScotts Bluff63 min
Jun 27, 9:47 PM MDTSevere Thunderstorm WarningCYSSioux58 min
Jun 27, 10:06 PM MDTTornado WarningCYSBanner39 min
Jun 27, 10:28 PM MDTTornado WarningCYSScotts Bluff32 min
Jun 27, 10:48 PM MDTSevere Thunderstorm WarningCYSSioux57 min
Jun 27, 11:16 PM MDTSevere Thunderstorm WarningCYSBox Butte29 min
Jun 27, 11:48 PM MDTSevere Thunderstorm WarningCYSBox Butte57 min
Jun 28, 12:49 AM MDTSevere Thunderstorm WarningCYSBox Butte, Dawes26 min
Jun 28, 1:12 AM MDTSevere Thunderstorm WarningCYSSheridan33 min
Jun 27, 7:32 PM MDTSevere Thunderstorm WarningCYSGoshen, Laramie28 min
Jun 27, 8:08 PM MDTSevere Thunderstorm WarningCYSLaramie52 min
Jun 27, 8:15 PM MDTSevere Thunderstorm WarningCYSGoshen45 min
Jun 27, 9:01 PM MDTSevere Thunderstorm WarningCYSLaramie44 min
Jun 27, 9:36 PM MDTSevere Thunderstorm WarningCYSGoshen54 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.