Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 59, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at May 29, 1998, 10:06 PM MDT for Dawes County, Sioux County, Nebraska. It was in force for 49 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 29, 1998, 10:06 PM MDT (04:06 UTC)
- Expired
- May 29, 1998, 10:55 PM MDT
- In force
- 49 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Dawes County, NE, Sioux County, NE
The radar
The Rapid City radar (KUDX), 176 km from the middle of the area, began a volume at 04:07 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 29, 11:00 PM MDT | Hail 1 | Chadron, NE | A storm produced quarter size hail at the Chadron State Park. |
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 29, 9:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 4.1 hours before the alert went out and 169 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
- 556 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1826 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 150 m²/s²
- 0-3 km storm-relative helicity
- 291 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 13.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KCYS 300406 RRA SVRCYS NEC045-165-300455- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE CHEYENNE WY 1006 PM MDT FRI MAY 29 1998 THE NATIONAL WEATHER SERVICE IN CHEYENNE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EAST CENTRAL SIOUX COUNTY IN THE NEBRASKA PANHANDLE SOUTHWESTERN DAWES COUNTY IN THE NEBRASKA PANHANDLE * UNTIL 1055 PM MDT * AT 1005 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 18 MILES OF SOUTHEAST OF HARRISON NEBRASKA... MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BELMONT AND MARSLAND AT 1035 PM THIS WARNING REPLACES THE PREVIOUS WARNING FOR THE SOUTH HALF OF SIOU@X COUNTY. DAMAGING WINDS AND LARGE HAIL ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS! LRE
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 29, 7:41 PM MDT, 2 hours 25 minutes before
WTZ060-068-NEZ001-300300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 741 PM MDT FRI MAY 29 1998 ...A STRONG THUNDERSTORM HAS DEVELOPED IN NORTHERN GOSHEN COUNTY... AT 735 PM...A STRONG THUNDERSTORM WAS LOCATED ALONG HIGHWAY 85...25 MILES TO THE NORTH OF TORRINGTON. THIS STORM DEVELOPED RAPIDLY SINCE 715 PM. THE STRONG THUNDERSTORM IS MOVING TO THE NORTHEAST AT 35 MPH AND AT ITS CURRENT MOVEMENT WILL AFFECT HARRISON NEBRASKA AROUND 820 PM. THIS STRONG STORM IS CAPABLE OF PRODUCING SMALL HAIL...BRIEF HEAVY RAIN AND WIND GUSTS TO 45 MPH. PEOPLE FROM NORTHEAST GOSHEN COUNTY TO HARRISON SHOULD BE AWARE OF THE APPROACHING STORM AND SEEK SHELTER IN A BUILDING WHEN THE STORM NEARS. WCJIN-WYSE WEILAND
Special weather statement, May 29, 7:41 PM MDT, 2 hours 25 minutes before
WTZ060-068-NEZ001-300300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 741 PM MDT FRI MAY 29 1998 ...A STRONG THUNDERSTORM HAS DEVELOPED IN NORTHERN GOSHEN COUNTY... AT 735 PM...A STRONG THUNDERSTORM WAS LOCATED ALONG HIGHWAY 85...25 MILES TO THE NORTH OF TORRINGTON. THIS STORM DEVELOPED RAPIDLY SINCE 715 PM. THE STRONG THUNDERSTORM IS MOVING TO THE NORTHEAST AT 35 MPH AND AT ITS CURRENT MOVEMENT WILL AFFECT HARRISON NEBRASKA AROUND 820 PM. THIS STRONG STORM IS CAPABLE OF PRODUCING SMALL HAIL...BRIEF HEAVY RAIN AND WIND GUSTS TO 45 MPH. PEOPLE FROM NORTHEAST GOSHEN COUNTY TO HARRISON SHOULD BE AWARE OF THE APPROACHING STORM AND SEEK SHELTER IN A BUILDING WHEN THE STORM NEARS. WCJIN-WYSE WEILAND
Special weather statement, May 29, 8:25 PM MDT, 1 hour 41 minutes before
WYZ068-NEZ001-300400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 825 PM MDT FRI MAY 29 1998 ...A LINE OF STRONG THUNDERSTORMS HAVE DEVELOPED OVER NORTHERN GOSHEN COUNTY WYOMING AND SIOUX COUNTY NEBRASKA... AT 820 PM...DOPPLER WEATHER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM 10 MILES NORTH OF TORRINGTON WYOMING TO 30 MILES WEST OF CHADRON NEBRASKA. THESE STORMS ARE MOVING NORTHEAST AT 30 MPH. AT THEIR CURRENT MOVEMENT THESE THUNDERSTORMS WILL AFFECT FORT ROBINSON AND CRAWFORD BY 850 PM. THESE STRONG STORMS ARE CAPABLE OF PRODUCING SMALL HAIL...BRIEF HEAVY RAIN AND WIND GUSTS TO 45 MPH. PEOPLE IN THE PATH OF THESE STORMS IN EASTERN GOSHEN COUNTY WYOMING AND SIOUX AND DAWES COUNTY NEBRASKA SHOULD WATCH FOR THE THUNDERSTORMS AND SEEK SHELTER IN A BUILDING WHEN THEY APPROACH. WCJIN-WYSE LRE
Special weather statement, May 29, 8:25 PM MDT, 1 hour 41 minutes before
WYZ068-NEZ001-300400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 825 PM MDT FRI MAY 29 1998 ...A LINE OF STRONG THUNDERSTORMS HAVE DEVELOPED OVER NORTHERN GOSHEN COUNTY WYOMING AND SIOUX COUNTY NEBRASKA... AT 820 PM...DOPPLER WEATHER RADAR INDICATED A LINE OF STRONG THUNDERSTORMS EXTENDING FROM 10 MILES NORTH OF TORRINGTON WYOMING TO 30 MILES WEST OF CHADRON NEBRASKA. THESE STORMS ARE MOVING NORTHEAST AT 30 MPH. AT THEIR CURRENT MOVEMENT THESE THUNDERSTORMS WILL AFFECT FORT ROBINSON AND CRAWFORD BY 850 PM. THESE STRONG STORMS ARE CAPABLE OF PRODUCING SMALL HAIL...BRIEF HEAVY RAIN AND WIND GUSTS TO 45 MPH. PEOPLE IN THE PATH OF THESE STORMS IN EASTERN GOSHEN COUNTY WYOMING AND SIOUX AND DAWES COUNTY NEBRASKA SHOULD WATCH FOR THE THUNDERSTORMS AND SEEK SHELTER IN A BUILDING WHEN THEY APPROACH. WCJIN-WYSE LRE
Special weather statement, May 29, 9:40 PM MDT, 26 minutes before
NEZ001>003-019>021-300900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 940 PM MDT FRI MAY 29 1998 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THE NORTHERN NEBRASKA PANHANDLE UNTIL 3 AM... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE NORTHERN NEBRASKA PANHANDLE UNTIL 3 AM SATURDAY MORNING. THIS WATCH INCLUDES THE CITIES OF ALLIANCE...CHADRON...SCOTTSBLUFF AND GERING. A WATCH MEANS THAT WEATHER CONDITIONS ARE FAVORABLE FOR THE FORMATION OF SEVERE STORMS. IN THIS CASE...LARGE HAIL AND STRONG WIND GUSTS ARE LIKELY WITH ANY STORM IN THE WATCH AREA. AT 935 PM...STRONG THUNDERSTORMS WERE LOCATED IN SOUTHERN SIOUX COUNTY AND SOUTHWEST DAWES COUNTY. A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 10 PM FOR SOUTHERN SIOUX COUNTY. ALL OF THE STORMS WERE MOVING TO THE NORTHEAST AT 25 MPH. WITH THE POSSIBILITY OF SEVERE THUNDERSTORMS IN THE NORTHERN NEBRASKA PANHANDLE THRU 3 AM...PEOPLE IN THE WATCH AREAS SHOULD MOVE INDOORS TO A SAFE SHELTER WHEN A STORM APPROACHES. WEILAND
Special weather statement, May 29, 9:40 PM MDT, 26 minutes before
NEZ001>003-019>021-300900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 940 PM MDT FRI MAY 29 1998 ...A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR THE NORTHERN NEBRASKA PANHANDLE UNTIL 3 AM... THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR THE NORTHERN NEBRASKA PANHANDLE UNTIL 3 AM SATURDAY MORNING. THIS WATCH INCLUDES THE CITIES OF ALLIANCE...CHADRON...SCOTTSBLUFF AND GERING. A WATCH MEANS THAT WEATHER CONDITIONS ARE FAVORABLE FOR THE FORMATION OF SEVERE STORMS. IN THIS CASE...LARGE HAIL AND STRONG WIND GUSTS ARE LIKELY WITH ANY STORM IN THE WATCH AREA. AT 935 PM...STRONG THUNDERSTORMS WERE LOCATED IN SOUTHERN SIOUX COUNTY AND SOUTHWEST DAWES COUNTY. A SEVERE THUNDERSTORM WARNING IS IN EFFECT UNTIL 10 PM FOR SOUTHERN SIOUX COUNTY. ALL OF THE STORMS WERE MOVING TO THE NORTHEAST AT 25 MPH. WITH THE POSSIBILITY OF SEVERE THUNDERSTORMS IN THE NORTHERN NEBRASKA PANHANDLE THRU 3 AM...PEOPLE IN THE WATCH AREAS SHOULD MOVE INDOORS TO A SAFE SHELTER WHEN A STORM APPROACHES. WEILAND
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 8:30 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 50 min |
| May 29, 9:14 PM MDT | Severe Thunderstorm Warning | CYS | Box Butte, Dawes | 51 min |
| May 29, 9:20 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 15 min |
| May 29, 9:31 PM MDT | Severe Thunderstorm Warning | CYS | Sioux | 49 min |
| May 29, 10:54 PM MDT | Severe Thunderstorm Warning | CYS | Dawes | 51 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.