Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 25, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 10, 1998, 7:33 PM MDT for Banner County, Nebraska. It was in force for 57 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, 1998, 7:33 PM MDT (01:33 UTC)
- Expired
- May 10, 1998, 8:30 PM MDT
- In force
- 57 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Banner County, NE
The radar
The Cheyenne radar (KCYS), 101 km from the middle of the area, began a volume at 01:33 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 10, 7:44 PM MDT | Hail 0.75 | Harrisburg, NE | 3/4 inch hail accumulated to a depth of several inches. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 10, 3:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Denver, CO (KDNR), launched 00:00Z, 1.6 hours before the alert went out and 191 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.
- Mixed-layer CAPE
- 56 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 2948 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
819 WUUS1 KCYS 110131 RRA SVRCYS NEC007-110230- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 733 PM MDT SUN MAY 10 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN BANNER COUNTY IN WESTERN NEBRASKA PANHANDLE * UNTIL 830 PM MDT * AT 725...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS 15 MILES WEST OF HARRISBURG ON THE WYOMING BORDER... MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... HARRISBURG BY 815 PM THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. DMM
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, 3:29 PM MDT, 4 hours 4 minutes before
WYZ059-060-067>070-NEZ001>003-019>021-054-055-110000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 329 PM MDT SUN MAY 10 1998 ...S SEVERE THUNDERSTORM WATCH FOR THE NEBRASKA PANHANDLE AND MUCH OF SOUTHEAST WYOMING IS IN EFFECT UNTIL 9 PM... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE NEBRASKA PANHANDLE AND MUCH OF SOUTHEAST WYOMING UNTIL 9 PM. THIS WATCH INCLUDES THE CITIES OF LUSK...DOUGLAS...WHEATLAND...TORRINGTON... SCOTTS BLUFF...GERING...CHADRON...ALLIANCE...SIDNEY AND KIMBALL. AY 320 PM...SEVERE THUNDERSTORMS WERE LOCATED FROM 26 MILES SOUTH OF TORRINGTON TO 5 MILES NORTHEAST OF SCOTTSBLUFF. THESE STORMS WERE MOVING TO THE EAST AT 20 MPH. AT 2 PM...GOLF BALL SIZED HAIL FELL ABOUT 20 MILES NORTH OF CHEYENNE AS WELL AS 2 FUNNEL CLOUDS. IN ADDTION...ONE HALF INCH DIAMETER HAIL FELL AT 3 PM IN SOUTHWEST GOSHEN COUNTY. < LARGE HAIL...STRONG WINDS IN EXCESS OF 50 MPH AND VERY HEAVY RAINFALL WILL BE ASSOCIATED WITH THE STORMS IN THE WATCH AREA THROUGH THE EVENING. SO FAR THIS AFTERNOON...DOPPLER RADAR HAS INDICATED RAINFALL AMOUNTS OF UP TO AN INCH PER HOUR. THESE HEAVY RAIN MAY PRODUCE URBAN AND LOW LAND FLOODING. A WATCH MEANS THAT WEATHER CONDITIONS ARE FAVORABLE FOR THE FORMATION OF SEVERE THUNDERSTORMS IN AND NEAR THAT AREA. STEPS SHOULD BE TAKEN NOW TO FIND THE SAFEST AREA IN YOUR LOCATION. PEOPLE IN SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE SHOULD BE ALERT TO THE APPROACH OF ANY THUNDERSTORMS. IF A STORM APPROACHES MOVE TO YOUR SAFE SHELTER. WCJIN-WYSE-WYNE WEILAND
Special weather statement, May 10, 3:29 PM MDT, 4 hours 4 minutes before
WYZ059-060-067>070-NEZ001>003-019>021-054-055-110000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 329 PM MDT SUN MAY 10 1998 ...S SEVERE THUNDERSTORM WATCH FOR THE NEBRASKA PANHANDLE AND MUCH OF SOUTHEAST WYOMING IS IN EFFECT UNTIL 9 PM... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE NEBRASKA PANHANDLE AND MUCH OF SOUTHEAST WYOMING UNTIL 9 PM. THIS WATCH INCLUDES THE CITIES OF LUSK...DOUGLAS...WHEATLAND...TORRINGTON... SCOTTS BLUFF...GERING...CHADRON...ALLIANCE...SIDNEY AND KIMBALL. AY 320 PM...SEVERE THUNDERSTORMS WERE LOCATED FROM 26 MILES SOUTH OF TORRINGTON TO 5 MILES NORTHEAST OF SCOTTSBLUFF. THESE STORMS WERE MOVING TO THE EAST AT 20 MPH. AT 2 PM...GOLF BALL SIZED HAIL FELL ABOUT 20 MILES NORTH OF CHEYENNE AS WELL AS 2 FUNNEL CLOUDS. IN ADDTION...ONE HALF INCH DIAMETER HAIL FELL AT 3 PM IN SOUTHWEST GOSHEN COUNTY. < LARGE HAIL...STRONG WINDS IN EXCESS OF 50 MPH AND VERY HEAVY RAINFALL WILL BE ASSOCIATED WITH THE STORMS IN THE WATCH AREA THROUGH THE EVENING. SO FAR THIS AFTERNOON...DOPPLER RADAR HAS INDICATED RAINFALL AMOUNTS OF UP TO AN INCH PER HOUR. THESE HEAVY RAIN MAY PRODUCE URBAN AND LOW LAND FLOODING. A WATCH MEANS THAT WEATHER CONDITIONS ARE FAVORABLE FOR THE FORMATION OF SEVERE THUNDERSTORMS IN AND NEAR THAT AREA. STEPS SHOULD BE TAKEN NOW TO FIND THE SAFEST AREA IN YOUR LOCATION. PEOPLE IN SOUTHEAST WYOMING AND THE NEBRASKA PANHANDLE SHOULD BE ALERT TO THE APPROACH OF ANY THUNDERSTORMS. IF A STORM APPROACHES MOVE TO YOUR SAFE SHELTER. WCJIN-WYSE-WYNE WEILAND
Special weather statement, May 10, 5:32 PM MDT, 2 hours 1 minute before
NEZ019-110000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 532 PM MDT SUN MAY 10 1998 ...A SEVERE THUNDERSTORM WATCH REMAINS POSTED FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9 PM... AT 530 PM...A THUNDERSTORM WITH HEAVY RAIN AND SMALL HAIL WAS LOCATED JUST SOUTH OF GERING. THIS STORM WAS MOVING NORTH NORTHEAST AT 15 MPH AND WILL IMPACT GERING THROUGH 550 PM. THIS STORM WILL MOVE VERY CLOSE TO SCOTTSBLUFF BY 545 PM. IF YOU ARE IN THE PATH OF THIS STORM...TAKE SHELTER AND STAY AWAY FROM WINDOWS. DMM
Special weather statement, May 10, 5:32 PM MDT, 2 hours 1 minute before
NEZ019-110000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 532 PM MDT SUN MAY 10 1998 ...A SEVERE THUNDERSTORM WATCH REMAINS POSTED FOR ALL OF THE NEBRASKA PANHANDLE UNTIL 9 PM... AT 530 PM...A THUNDERSTORM WITH HEAVY RAIN AND SMALL HAIL WAS LOCATED JUST SOUTH OF GERING. THIS STORM WAS MOVING NORTH NORTHEAST AT 15 MPH AND WILL IMPACT GERING THROUGH 550 PM. THIS STORM WILL MOVE VERY CLOSE TO SCOTTSBLUFF BY 545 PM. IF YOU ARE IN THE PATH OF THIS STORM...TAKE SHELTER AND STAY AWAY FROM WINDOWS. DMM
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 8:11 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 49 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning in 1998
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.