Alert archive / Montana / Tornado Warnings in 1990
Tornado Warning 4, NWS Billings, MT
NWS Billings, MT issued this tornado warning at May 24, 1990, 6:50 PM MDT for Carter County, Custer County, Powder River County, Montana. It was in force for 55 min.
The area
The counties it named.
The facts
- Issued
- May 24, 1990, 6:50 PM MDT (00:50 UTC)
- Expired
- May 24, 1990, 7:45 PM MDT
- In force
- 55 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
Counties Carter County, MT, Custer County, MT, Powder River County, MT
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
Rapid City, SD (KRAP), launched 00:00Z, 0.8 hours before the alert went out and 262 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
- 827 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 744 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBIL 250050 RRA
TORBIL
MTC011-017-075-250145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
650 PM MDT THU MAY 24 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 745 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE STATE OF MONTANA
WESTERN CARTER...SOUTHEAST CUSTER...NORTHEAST POWDER RIVER
AT 635 PM MDT A TORNADO WAS SPOTTED BY THE PUBLIC 35 MILES NORTH-
EAST OF BROADUS IN POWDER RIVER COUNTY MONTANA. THE STORM WAS MOVIN
G TO THE NORTH AT 25 MILES AN HOUR.
THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BELOW GROUND IF
AVAILABLE. OTHERWISE...GO TO A SMALL INTERIOR ROOM ON THE LOWEST
FLOOR POSSIBLE. AVOID WINDOWS. ABANDON CARS AND MOBILE HOMES...
TAKE COVER IN A REINFORCED BUILDING OR GET INTO A DITCH OR CULVERT.
THORICHTWhat forecasters said that day
The local office's own words before this tornado 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 24, 1:29 PM MDT, 5 hours 21 minutes before
WYZ005-242130 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHERIDAN WY 135 PM MDT THU MAY 24 1990 ...THUNDERSTORMS CONTINUE TO DEVELOP IN NORTH CENTRAL WYOMING... AT 110 PM MDT THIS THURSDAY AFTERNOON THE PUBLIC REPORTED PEA SIZE HAIL AND HEAVY RAIN IN STORY WYOMING SOME 12 MILES SOUTH SOUTHEAST OF SHERIDAN WYOMING. RADAR SHOWED THIS STORM MOVING NORTHEAST AT ABOUT 20 MILES AN HOUR. THUNDERSTORMS SHOULD CONTINUE IN NORTH CENTRAL WYOMING THE REST OF THIS AFTERNOON. SOME OF THESE STORMS ARE EXPECTED TO HAVE STRONG GUSTY WINDS...BREIF HEAVY RAIN AND SOME HAIL. A TORNADO WATCH CONTINUES TO BE IN EFFECT FOR MUCH OF EASTERN WYOMING EAST OF SHERIDAN COUNTY. IF THREATENING WEATHER AwPPROACHES GO TO A SAFE PLACE. ZEGLIN
Special weather statement, May 24, 2:32 PM MDT, 4 hours 18 minutes before
WYZ005-242230 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHERIDAN WY 235 PM MDT THU MAY 24 1990 ...STRONG THUNDERSTORMS IN NORTH CENTRAL WYOMING... AT 220 PM MDT THIS THURSDAY AFTERNOON THE PUBLIC REPORTED MARBLE SIZE HAIL AND HEAVY RAIN AT LAKE DE SMET 25 MILES SOUTH SOUTHEAST OF SHERIDAN WYOMING. RADAR SHOWED THIS STORM MOVING NORTHEAST AT ABOUT 20 MILES AN HOUR. THUNDERSTORMS SHOULD CONTINUE IN NORTH CENTRAL WYOMING THE REST OF THIS AFTERNOON. SOME OF THESE STORMS ARE EXPECTED TO HAVE STRONG GUSTY WINDS...BREIF HEAVY RAIN AND SOME HAIL. A TORNADO WATCH CONTINUES TO BE IN EFFECT FOR MUCH OF EASTERN WYOMING EAST OF SHERIDAN COUNTY UNTIL 7 PM MDT. IF THREATENING WEATHER APPROACHES GO TO A SAFE PLACE. ZEGLIN
Special weather statement, May 24, 3:37 PM MDT, 3 hours 13 minutes before
WYZ003-242300 SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SHERIDAN WY 340 PM MDT THU MAY 24 1990 ...STRONG THUNDERSTORMS CONTINUE IN NORTH CENTRAL WYOMING... AT 320 PM MDT THIS THURSDAY AFTERNOON THE FIRE DEPARTMENT REPORTED A FUNNEL CLOUD MOVING NORTH AT FRANNIE WYOMING...73 MILES NORTH N0RTHEAST OF WORLAND WYOMING. RADAR SHOWED THIS STORM MOVING NORTH ABOUT 20 MILES AN HOUR. THUNDERSTORMS SHOULD CONTINUE IN NORTH CENTRAL WYOMING THE REST OF THIS AFTERNOON. SOME OF THESE STORMS ARE EXPECTED TO HAVE STRONG GUSTY WINDS...BREIF HEAVY RAIN AND SOME HAIL. A TORNADO WATCH CONTINUES TO BE IN EFFECT FOR MUCH OF EASTERN WYOMING EAST OF SHERIDAN COUNTY UNTIL 7 PM MDT. IF THREATENING+ WEATHER APPROACHES GO TO A SAFE PLACE. ZEGLIN
Nearby
Tornado Warnings in Montana, 1990Every tornado warning in 1990Tornadoes 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; the sounding from the Mesonet's radiosonde archive.