Alert archive / Nebraska / Severe Thunderstorm Warnings in 1987
Severe Thunderstorm Warning 39, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 8, 1987, 11:06 PM MDT for Cheyenne County, Nebraska. It was in force for 29 min.
The area
The counties it named.
The facts
- Issued
- Jul 8, 1987, 11:06 PM MDT (05:06 UTC)
- Expired
- Jul 8, 1987, 11:35 PM MDT
- In force
- 29 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
County Cheyenne County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Denver, CO (KDEN), launched 00:00Z, 5.1 hours before the alert went out and 151 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
- 695 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 2416 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KBFF 090506 SVRBFF NEC033-123-090600- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 1106 PM MDT WED JUL 8 1987 THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1200 AM MDT FOR PEOPLE IN THE FOLLOWING COUNTIES OF PANHANDLE OF NEBRASKA...NORTHERN CHEYENNE AND SOUTHEAST MORRILL AT 11PM MDT A SEVERE THUNDERSTORM WAS INDICATED BY RADAR 10 MILES NORTH OF SIDNEY NEBRASKA THAT WAS MOVING NORTHEAST AT 30 MPH. THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE OR NO WARNING...SO BE ON THE LOOKOUT. PEOPLE IN THE WARNED AREA SHOULD GET INTO A REINFORCED SHELTER AND PREPARE FOR DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND DANGEROUS LIGHTNING. SEVERE THUNDERSTORMS PRODUCE LARGE HAIL...GREATER THAN 3/4 INCH IN DIAMETER...DAMAGING WINDS AND VERY HEAVY RAINS THAT CAN QUICKLY FLOOD A LOW LYING AREA. GOLF BALL TO EGG SIZED H:AIL WAS REPORTED WITH THIS STORM 7 MILES NORTHWEST OF SIDNEY NEBRASKA SHORTLY BEFORE 11PM MDT. KOSEL
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, Jul 8, 6:48 PM MDT, 4 hours 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 650 PM MDT WED JUL 8 1987 A COUPLE OF STRONG THUNDERSTORMS HAD DEVELOPED SINCE 630 PM ABOUT 15 MILES WEST OF CHEYENNE WYOMING. TH
Special weather statement, Jul 8, 7:33 PM MDT, 3 hours 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 730 PM MDT WED JUL 8 1987 WIDELY SCATTERED THUNDERSTORMS CONTINUED OVER THE SOUTHEAST CORNER OF WYOMING AT 725 PM. THE STRONGEST TyHUNDERSTORM WAS JUST NORTH OF CHEYENNE. BRIEF HEAVY RAIN AND SMALL HAIL WERE LIKELY WITH THIS STORM. ALL OF THE THUNDERSTORMS WERE MOVING NORTHEAST AT 15 MILES AN HOUR. HATTEN
Special weather statement, Jul 8, 9:19 PM MDT, 1 hour 47 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 918 PM MDT WED JUL 8 1987 STRONG THUNDERSTORMS MOVED OVER SOUTHERN GOSHEN COUNTY OF SOUTHEAST WYOMING TONIGHT. AT 9 PM THE STRONGEST OF THESE STORMS WAS LOCATED A FEW MILES WEST OF LINGLE...OR ABOUT 8 MILES WEST OF TORRINGTON. THE STORMS WERE MOVING TOWARDS THE EAST AT 20 MILES AN HOUR. PEOPLE IN THE TOWNS OF LINGLE AND TORRINGTON CAN EXPECT SMALL HAIL... BRIEF HEAVY RAIN...AND FREQUENT LIGHTNING WITH THESE STORMS. MENTZER
Special weather statement, Jul 8, 9:33 PM MDT, 1 hour 33 minutes before
SPECIAL WEATHER STATEMENT...CORRECTED NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 930 PM MDT WED JUL 8 1987 ...THUNDERSTORMS MOVING INTO THE WEST NEBRASKA PANHANDLE... THUNDERSTORMS THAT DEVELOPED OVER SOUTHEAST WYOMING EARLIER THIS EVENING HAVE BEGUN MOVING INTO THE WEST NEBRASKA PANHANDLE. AT 925PM MDT...THUNDERSTORMS EXTENDED FROM 30 MILES SOUTHWEST TO 35 MILES NORTHWEST OF SCOTTSBLUFF NEBRASKA THAT WERE MOVING EAST AT 25 MPH. BRIEF HEAVY RAIN... GUSTY WIND AND SMALL HAIL IS POSSIBLE WITH THESE STORMS OVER KIMBALL...BANNER...SCOTTS BLUFF...AND SIOUX COUNTIES OF THE WEST NEBRASKA PANHANDLE UNTIL 11 PM MDT TONIGHT. KOSEL
Special weather statement, Jul 8, 9:52 PM MDT, 1 hour 14 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CHEYENNE WY 950 PM MDT WED JUL 8 1987 STRONG THUNDERSTORMS CONTINUED OVER THE SOUTHEAST CORNER OF WYOMING AT 945 PM. THE STRONGEST THUNDERSTORM WAS ABOUT 12 MILES EAST OF CHEYENNE OR NEAR THE TOWN OF HILLSDALE. OTHER STRONG THUNDERSTORMS WERE LOCATED SOME FIVE MILES NORTH AND JUST SOUTHWEST OF TORRINGTON...OR ROUGHLY 85 MILES NORTHEAST OF CHEYENNE. ALL OF THE THUNDERSTORMS WERE MOVING EAST AT 20 MILES AN HOUR. BRIEF HEAVY RAIN...SMALL HAIL AND DEADLY LIGHTNING WILL ACCOMPANY THE STRONGER THUNDERSTORMS. THE STORMS WILL MOVE INTO WESTERN NEBRASKA AROUND 1030 PM. HATTEN
Special weather statement, Jul 8, 10:20 PM MDT, 46 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 1018 PM MDT WED JUL 8 1987 ...THUNDERSTORMS CONTINUE TO MOVE ACROSS THE NEBRASKA PANHANDLE... AT 1015PM MDT A LINE OF SCATTERED THUNDERSTORMS EXTENDED FROM 25 MILES NORTHWEST TO 30 MILES SOUTH OF SCOTTSBLUFF NEBRASKA TO JUST SOUTHWEST OF SIDNEY. MOVEMENT HAD INCREASED TO THE NORTHEAST AT 35 MPH. BRIEF HEAVY RAIN... GUSTY WIND AND SMALL HAIL ALONG WITH CONSIDERABLE INTENSE LIGHTNING WILL ACCOMPANY THESE STORMS OVER MUCH OF THE NEBRASKA PANHANDLE UNTIL AROUND MIDNIGHT MDT. KOSEL
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 11:06 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 54 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1987Every severe thunderstorm warning in 1987
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.