Alert archive / Nebraska / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 12, NWS Cheyenne, WY

May 22, 1996Cheyenne County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 22, 1996, 4:52 PM MDT for Cheyenne County, Nebraska. It was in force for 68 min. 2 reports 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: May 22, 1996, 4:52 PM MDT (22:52 UTC)
Expired: May 22, 1996, 6:00 PM MDT
In force: 68 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

County Cheyenne County, NE

The radar

The Cheyenne radar (KCYS), 152 km from the middle of the area, began a volume at 22:51 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

Time	Report	Where	Remark
May 22, 4:58 PM MDT	Hail 0.75	Sidney, NE
May 22, 5:10 PM MDT	Hail 1	Sidney, 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.

The nearest sounding before it

Denver, CO (KDNR), launched 12:00Z, 10.9 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1706 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 73 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, May 22, 1:23 PM MDT, 3 hours 29 minutes before

WYZ059>070-NEZ001>003-019>021-054-055-222030-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
122 PM MDT TUE MAY 22 1996

AT 120 PM...DOPPLER RADAR IN CHEYENNE INDICATED AN AREA OF SHOWERS AND
THUNDERSTORMS DEVELOPING OVER SOUTHEAST WYOMING INTO THE NEBRASKA
PANHANDLE.  THE STRONGEST STORM WAS LOCATED 4 MILES NORTHWEST OF
CHUGWATER IN SOUTHEAST PLATTE COUNTY WYOMING.  THE STORM WAS MOVING
NORTHEAST AT 20 MILES AN HOUR.

SMALL HAIL...BRIEF HEAVY RAIN AND DANGEROUS LIGHTNING CAN BE EXPECTED
FROM THIS STORM.

PAL

Special weather statement, May 22, 1:48 PM MDT, 3 hours 4 minutes before

WYZ059>070-NEZ001>03-019>021-054-055-222300-

SEVERE WEATHER OUTLOOK...CORRECTED THE DATE AND EXPIRATION TIME
NATIONAL WEATHER SERVICE CHEYENNE WY
147 PM MDT WED MAY 22 1996

THE SEVERE WEATHER POTENTIAL IN THE COUNTY WARNING AREA OF THE CHEYENNE
NATIONAL WEATHER SERVICE OFFICE IS MODERATE THIS AFTERNOON AND EVENING.

SPOTTER ACTIVATION MAY BE NECESSARY.

DISCUSSION...A DEVELOPING SPRING STORM SYSTEM OVER THE WEST WAS
 GIVING A SOUTHWEST FLOW ALOFT OVER THE AREA WITH INCREASING
 MOISTURE.  AT THE SURFACE...A LOW PRESSURE SYSTEM WILL DEVELOP INTO
 EAST CENTRAL COLORADO AND NORTHWEST KANSAS IN THE AFTERNOON PROVIDING
 A SOUTHTEAST FLOW INTO THE NEBRASKA PANHANDLE AND SOUTHEAST WYOMING.
 THE AIRMASS WILL BECOME UNSTABLE WITH A SLIGHT RISK FOR SEVERE
 THUNDERSTORMS EXPECTED LATER THIS AFTERNOON AND THIS EVENING.

THIS OUTLOOK IS FOR THE FOLLOWING COUNTIES IN SOUTHEAST WYOMING AND
THE NEBRASKA PANHANDLE:
>
WY...ALBANY...CONVERSE...G@OSHEN...LARAMIE...NIOBRARA...PLATTE.

NE...BANNER   BOX BUTTE   CHEYENNE   DAWES   KIMBALL   MORRILL   SIOUX
     SCOTTS BLUFF

WCJIN-WYSE-WYNE

PAL

Special weather statement, May 22, 2:05 PM MDT, 2 hours 47 minutes before

WYZ059>070-NEZ001>003-019>021-054-055-222115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
200 PM MDT WED MAY 22 1996

SHOWERS AND THUNDERSTORMS WERE BECOMING FAIRLY WIDESPREAD OVER
SOUTHEAST WYOMING AND PARTS OF THE NEBRASKA PANHANDLE.  AT 155 PM ONE
STRONG STORM WAS DEVELOPING 5 MILES NORTHEAST OF CHEYENNE.  THE SOUTHERN
EDGE OF THIS STORM PRODUCED PEA SIZE HAIL OVER NORTHEAST CHEYENNE.  THE
STORM WAS MOVING EAST AT 20 MPH.  THIS STORM COULD PRODUCE PEA TO
MARBLE SIZE HAIL AS IT MOVES THROUGH EASTERN LARAMIE COUNTY.

OTHER THUNDERSTORM ACTIVITY ACROSS SOUTHEAST WYOMING AND THE NEBRASKA
PANHANDLE WAS WEAK AT 155 PM.  STORMS ARE EXPECTED TO CONTINUE TO
DEVELOP THIS AFTERNOON AND SOME COULD BECOME RATHER STRONG.

JMH

Special weather statement, May 22, 3:06 PM MDT, 1 hour 46 minutes before

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Special weather statement, May 22, 3:21 PM MDT, 1 hour 31 minutes before

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Special weather statement, May 22, 4:39 PM MDT, 13 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 22, 3:36 PM MDT	Severe Thunderstorm Warning	CYS	Kimball	54 min
May 22, 2:18 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	42 min
May 22, 3:00 PM MDT	Severe Thunderstorm Warning	CYS	Laramie	30 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1996 Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.