Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 76, NWS Cheyenne, WY
NWS Cheyenne, WY issued this severe thunderstorm warning at Jul 18, 1990, 3:52 PM MDT for Box Butte County, Dawes County, Sheridan County, Nebraska. It was in force for 68 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
- Jul 18, 1990, 3:52 PM MDT (21:52 UTC)
- Expired
- Jul 18, 1990, 5:00 PM MDT
- In force
- 68 min
- Issued by
- NWS Cheyenne, WY
- Area
- Whole counties
Counties Box Butte County, NE, Dawes County, NE, Sheridan County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 18, 4:03 PM MDT | Tornado F0 | Box Butte, 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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 9.9 hours before the alert went out and 241 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
- 1500 J/kg
- Mixed-layer CIN
- -294 J/kg
- Mixed-layer LCL
- 1796 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 35 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 182152
SVRBFF
NEC045-161-013-182300-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SCOTTSBLUFF NE
352 PM MDT WED JUL 18 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 500 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE PANHANDLE OF NEBRASKA
EASTERN DAWES...WESTERN SHERIDAN...NORTHEAST BOX BUTTE
AT 345 PM MDT...RADAR INDICATED SEVERE THUNDERSTORMS 25 MILES SOUTH
OF CHADRON NEBRASKA IN THE NORTH NEBRASKA PANHANDLE...OR 5 MILES
NORTHEAST OF HEMINGFORD NEBRASKA. THE STORM WAS MOVING NORTHEAST
AT 25 MILES AN HOUR.
PREPARE FOR LARGE HAIL...DAMAGING WIND...HEAVY RAIN AND DANGEROUS
LIGHTNING BY TAKING COVER. STAY AWAY FROM AREAS WHERE LOOSE ITEMS
CAN BECOME DANGEROUS FLYING DEBRIS.
THESE STORMS CAN AND OCCASIONALLY DO PRODUCE A TORNADO WITH LITTLE
OR NO WARNING...SO BE ON THE LOOKOUT AND BE PREPARED TO MOVE TO A
PLACE OF SAFETY IF ONE FIS SPOTTED.
WIRTHWhat 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 18, 2:48 PM MDT, 1 hour 4 minutes before
NEZ001-182200- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SCOTTSBLUFF NE 248 PM MDT MON JUL 16 1990 ...THUNDERSTORMS CONTINUED OVER THE WESTERN NEBRASKA PANHANDLE... AT 245 PM MDT...STRONG THUNDERSTORMS CONTINUED TO DEVELOP OVER THE NORTHERN NEBRASKA PANHANDLE FROM 25 MILES NORTHWEST OF ALLIANCE NEBRASKA TO 10 MILES EAST OF CHADRON NEBRASKA. THESE STORMS WERE MOVING NORTHEAST AT 25 MPH. BRIEF HEAVY RAIN...GUSTY WIND...AND HAIL ARE LIKELY ACROSS NORTHERN BOX BUTTE...EASTERN DAWES AND WESTERN SHERIDAN COUNTIES OF THE NEBRASKA PANHANDLE UNTIL 4 PM MDT. PEEK
The office that day
Everything else NWS Cheyenne, WY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 3:11 PM MDT | Severe Thunderstorm Warning | CYS | Dawes, Sheridan | 64 min |
| Jul 18, 4:04 PM MDT | Tornado Warning | CYS | Box Butte | 26 min |
| Jul 18, 4:29 PM MDT | Tornado Warning | CYS | Box Butte | 31 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1990Every severe thunderstorm warning in 1990
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.