Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 19, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 10, 1998, 3:45 PM MDT for Banner County, Scotts Bluff County, Nebraska. It was in force for 30 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, 3:45 PM MDT (21:45 UTC)
- Expired
- May 10, 1998, 4:15 PM MDT
- In force
- 30 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Banner County, NE, Scotts Bluff County, NE
The radar
The Cheyenne radar (KCYS), 110 km from the middle of the area, began a volume at 21:45 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, 3:45 PM MDT | Hail 1 | Scottsbluff, 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 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 12:00Z, 9.8 hours before the alert went out and 207 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
- 12 J/kg
- Mixed-layer CIN
- -208 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 19 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
732 WUUS1 KCYS 102146 RRA SVRCYS NEC007-157-102215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 345 PM MDT SUN MAY 10 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST SCOTTS BLUFF COUNTY IN WESTERN NEBRASKA PANHANDLE EXTREME NORTHWESTERN BANNER COUNTY IN WESTERN NEBRASKA PANHANDLE * UNTIL 415 PM MDT * AT 345 PM MDT...SPOTTERS INDICATED A SEVERE THUNDERSTORM ALONG THE WYOMING-NEBRASKA STATE LINE 25 MILES SOUTHWEST OF SCOTTSBLUFF... MOVING EAST AT 20 MPH. THIS STORMS WAS PROCUCING HAIL IN EXCESS OF ONE INCH IN DIAMETER. * THE SEVERE THUNDERSTORM WILL BE NEAR... REMAIN IN RURAL AREAS THIS IS A DANGEROUS STORM STAY INDOORS AWAY FROM WINDOWS. THIS WARNING DOES NOT INCLUDE SCOTTSBLUFF/GERING. 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, 9:49 AM MDT, 5 hours 56 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-110000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 949 AM MDT SUN MAY 10 1998 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS HIGH TODAY. SPOTTER ACTIVATION WILL LIKELY BE REQUIRED. DISCUSSION...THUNDERSTORMS WILL DEVELOP BY MID AFTERNOON OVER SOUTH CENTRAL AND SOUTHEAST WYOMING AND THEN MOVE INTO EAST CENTRAL WYOMING AND THE NEBRASKA PANHANDLE. THE AIRMASS WILL BE MOIST AND UNSTABLE WITH GOOD WIND SHEAR. THE RESULT FOR AREAS EAST OF THE LARAMIE RANGE WILL BE STORMS THAT PRODUCE HEAVY RAIN...HAIL UP TO ONE AND ONE HALF INCHES AND WIND GUSTS BETWEEN 40 AND 50 MPH AS THEY MOVE TO THE EAST. THE RAIN WILL CAUSE MINOR FLOODING OF URBAN AND LOW LYING AREAS BY LATE AFTERNOON. WCJIN-WYSE-WYNE WEILAND
Special weather statement, May 10, 9:49 AM MDT, 5 hours 56 minutes before
WYZ059>070-NEZ001>003-019>021-054-055-110000- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE CHEYENNE WY 949 AM MDT SUN MAY 10 1998 THE SEVERE WEATHER POTENTIAL IN THE CHEYENNE NWS COUNTY WARNING AREA IS HIGH TODAY. SPOTTER ACTIVATION WILL LIKELY BE REQUIRED. DISCUSSION...THUNDERSTORMS WILL DEVELOP BY MID AFTERNOON OVER SOUTH CENTRAL AND SOUTHEAST WYOMING AND THEN MOVE INTO EAST CENTRAL WYOMING AND THE NEBRASKA PANHANDLE. THE AIRMASS WILL BE MOIST AND UNSTABLE WITH GOOD WIND SHEAR. THE RESULT FOR AREAS EAST OF THE LARAMIE RANGE WILL BE STORMS THAT PRODUCE HEAVY RAIN...HAIL UP TO ONE AND ONE HALF INCHES AND WIND GUSTS BETWEEN 40 AND 50 MPH AS THEY MOVE TO THE EAST. THE RAIN WILL CAUSE MINOR FLOODING OF URBAN AND LOW LYING AREAS BY LATE AFTERNOON. WCJIN-WYSE-WYNE WEILAND
Special weather statement, May 10, 3:29 PM MDT, 16 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, 16 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
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 4:15 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 45 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.