Alert archive / Nebraska / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 7, NWS Cheyenne, WY

May 10, 1991Dawes County, Sioux County, Nebraska

NWS Cheyenne, WY issued this severe thunderstorm warning at May 10, 1991, 4:34 PM MDT for Dawes County, Sioux County, Nebraska. It was in force for 56 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: May 10, 1991, 4:34 PM MDT (22:34 UTC)
Expired: May 10, 1991, 5:30 PM MDT
In force: 56 min
Issued by: NWS Cheyenne, WY
Area: Whole counties

Counties Dawes County, NE, Sioux County, NE

What was reported inside it

Time	Report	Where	Remark
May 10, 5:40 PM MDT	Hail 3.75	Dawes, 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 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 10, 10:57 AM MDT, 5 hours 37 minutes before

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Special weather statement, May 10, 2:50 PM MDT, 1 hour 44 minutes before

WYZ012-017-110050-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
250 PM MDT FRI MAY 10 1991

...A TORNADO WATCH HAS BEEN ISSUED FOR EXTREME EASTERN WYOMING
UNTIL 9 PM THIS FRIDAY EVENING...

VERY STRONG THUNDERSTORM ARE EXPECT TO DEVELOP OVER PORTIONS OF
EASTERN WYOMING THE REST OF THE AFTERNOON AND EVENING. A FEW OF THESE
STORMS COULD PRODUCE BRIEF HEAVY RAIN AND HAIL. A TORNADO IS POSSIBLE
WITH ONE OF THESE STORMS.   THE MOST LIKELYHOOD OF SEVERE WEATHER IS
IN NIOBRARA...GOSHEN...LARAMIE OR EASTERN PLATTE COUNTY.

A TORNADO WATCH HAS BEEN POSTED FOR THE EASTERN COUNTIES AND INCLUDE
THE FOLLOWING CITIES IN THE WATCH AREA...TORRINGTON...LUSK...CHEYENNE
AND PINE BLUFFS.

NEAR 245 PM A STRONG THUNDERSTORM WAS NOTED ON RADAR IN SOUTHWESTERN
GOSHEN COUNTY MOVING TO THE NORTH AT NEARLY 30 MILES AN HOUR.

SGS

Special weather statement, May 10, 3:28 PM MDT, 1 hour 6 minutes before

WYZ012-017-110035-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE CHEYENNE WY
325 PM MDT FRI MAY 10 1991

...A TORNADO WATCH HAS BEEN ISSUED FOR EXTREME EASTERN WYOMING
UNTIL 9 PM THIS FRIDAY EVENING...

A LINE OF THUNDERSTORMS WAS LOCATED BY WEATHER RADAR IN NORTHERN
LARAMIE COUNTY AND IN SOUTHWEST GOSHEN COUNTY FRIDAY AFTERNOON.
HAILSTONES UP TO ONE HALF INCH WERE REPORTED FROM ONE OF THESE STORMS
AROUND 3 PM. THE LOCATION OF THE SMALL HAIL WAS 28 MILES NORTHEAST
OF CHEYENNE.

RADAR CONTINUED TO NOTED SCATTERED SHOWERS AND THUNDERSTORMS IN
SOUTHEAST WYOMING MOVING TO THE NORTH AT NEARLY 30 MILES AN HOUR.

SGS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 10, 2:21 PM MDT	Severe Thunderstorm Warning	CYS	Sioux	69 min
May 10, 3:35 PM MDT	Severe Thunderstorm Warning	CYS	Dawes, Sioux	55 min
May 10, 5:31 PM MDT	Severe Thunderstorm Warning	CYS	Dawes, Sioux	59 min
May 10, 4:32 PM MDT	Severe Thunderstorm Warning	CYS	Goshen	28 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 1991 Every 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.