Alert archive / Nebraska / Severe Thunderstorm Warnings in 1993
Severe Thunderstorm Warning 77, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jun 30, 1993, 8:43 PM MDT for Sheridan County, Nebraska. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Jun 30, 1993, 8:43 PM MDT (02:43 UTC)
- Expired
- Jun 30, 1993, 9:45 PM MDT
- In force
- 62 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Sheridan County, NE
The nearest sounding before it
Rapid City, SD (KRAP), launched 00:00Z, 2.7 hours before the alert went out and 178 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
- -21 J/kg
- Mixed-layer LCL
- 1954 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 38 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Jun 30, 8:16 PM MDT, 27 minutes before
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</html>Special weather statement, Jun 30, 8:16 PM MDT, 27 minutes before
NEZ001-005-011-010330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 816 PM MDT WED JUN 30 1993 ...ISOLATED THUNDERSTORMS IN THE NORTHWEST NEBRASKA PANHANDLE... AN ISOLATED AREA OF THUNDERSTORMS WAS LOCATED FROM 5 MILES EAST OF CHADRON TO 30 MILES NORTHEAST OF CHADRON ON THE NEBRASKA-SOUTH DAKOTA STATELINE...JUST SOUTH OF PINE RIDGE SOUTH DAKOTA. AT 814 PM MDT...THE AREA OF STORMS WAS MOVING NORTHEAST AT 15 MPH. BRIEF HEAVY RAIN...GUSTY WIND AND DANGEROUS LIGHTNING WILL BE POSSIBLE WITH THE STORMS IN THE NORTHEAST CORNER OF DAWES COUNTY UNTIL 845 PM MDT ...AND IN THE NORTHWEST CORNER OF SHERIDAN COUNTY UNTIL 930 PM MDT. PFEIFFER
Special weather statement, Jun 30, 8:23 PM MDT, 20 minutes before
WYZ072-073-010300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 825 PM MDT WED JUN 30 1993 ...THUNDERSTORM ARE MOVING ACROSS SOUTHEAST WYOMING... A STRONG THUNDERSTORM HAS DEVELOPED IN SOUTHEAST WYOMING. AT 815 PM THIS EVENING THE STORM WAS ABOUT 5 MILES NORTHEAST OF BURNS WY...OR ABOUT 25 MILES EAST OF CHEYENNE. MARBLE SIZE DIAMETER HAIL HAS BEEN REPORTED WITH THIS STORM. IT WAS MOVING NORTHEAST AT 15 MILES AN HOUR. THUNDERSTORMS ARE EXPECTED TO CONTINUE IN SOUTHEAST WYOMING FOR THE NEXT 30 TO 45 MINUTES. HAIL...DANGEROUS LIGHTNING AND STRONG GUSTY WINDS ARE LIKELY WITH THESE STORMS. PEOPLE IN SOUTHEAST WYOMING ARE URGED TO KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS. IF THREATENING WEATHER APPROACHES...TAKE SHELTER. WCJIN-WYSE- CGB
Special weather statement, Jun 30, 8:25 PM MDT, 18 minutes before
WYZ072-073-010300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 825 PM MDT WED JUN 30 1993 ...THUNDERSTORM ARE MOVING ACROSS SOUTHEAST WYOMING... A STRONG THUNDERSTORM HAS DEVELOPED IN SOUTHEAST WYOMING. AT 815 PM THIS EVENING THE STORM WAS ABOUT 5 MILES NORTHEAST OF BURNS WY...OR ABOUT 25 MILES EAST OF CHEYENNE. MARBLE SIZE DIAMETER HAIL HAS BEEN REPORTED WITH THIS STORM. IT WAS MOVING NORTHEAST AT 15 MILES AN HOUR. THUNDERSTORMS ARE EXPECTED TO CONTINUE IN SOUTHEAST WYOMING FOR THE NEXT 30 TO 45 MINUTES. HAIL...DANGEROUS LIGHTNING AND STRONG GUSTY WINDS ARE LIKELY WITH THESE STORMS. PEOPLE IN SOUTHEAST WYOMING ARE URGED TO KEEP ABREAST OF THE LATEST WEATHER DEVELOPMENTS. IF THREATENING WEATHER APPROACHES...TAKE SHELTER. WCJIN-WYSE- CGB
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 9:10 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 25 min |
| Jun 30, 9:21 PM MDT | Tornado Warning | CYS | Sheridan | 24 min |
| Jul 1, 2:32 PM MDT | Severe Thunderstorm Warning | CYS | Deuel | 21 min |
| Jun 30, 8:20 PM MDT | Severe Thunderstorm Warning | CYS | Laramie | 40 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1993Every severe thunderstorm warning in 1993
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.