Alert archive / Montana / Tornado Warnings in 1990
Tornado Warning 6, NWS Billings, MT
NWS Billings, MT issued this tornado warning at Jul 6, 1990, 9:42 PM MDT for Rosebud County, Montana. It was in force for 33 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 6, 1990, 9:42 PM MDT (03:42 UTC)
- Expired
- Jul 6, 1990, 10:15 PM MDT
- In force
- 33 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Rosebud County, MT
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 6, 10:10 PM MDT | Hail 1 | Rosebud, MT |
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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 3.7 hours before the alert went out and 221 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
- 352 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 2419 m above ground
- 0-6 km bulk shear
- 64 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBIL 070343
TORBIL
MTC087-070415-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
942 PM MDT FRI JUL 6 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 1015 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE STATE OF MONTANA
CENTRAL ROSEBUD...INCLUDING THE CITY OF FORSYTH
AT 930 PM MDT...A FUNNEL CLOUD WAS REPORTED BY THE ROSEBUD COUNTY
SHERIFF OVER THE TOWN OF COLSTRIP MONTANA.
PEOPLE IN COLSTRIP SHOULD TAKE COVER NOW.
IF YOU ARE IN THE PATH OF A TORNADO...THE SAFEST PLACE TO BE IS IN
A BASEMENT. GET UNDER A WORKBENCH OR PIECE OF STURDY FURNITURE.
IF NO BASEMENT IS AVAILABLE...FIND SHELTER IN AN INTERIOR ROOM
SUCH AS A CLOSET ON THE LOWEST FLOOR. USE BLANKETS...PILLOWS...
OR CUSHIONS TO COVER YOUR BODY. AVOID WINDOWS.
THIS IS A DANGEROUS STORM SITUATION. ACT QUICKLY. IF YOU ARE
IN THE PATH OF THIS TORNADO MOVE TO A SHELTER BE LOW 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.
KARRWhat 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, Jul 6, 3:44 PM MDT, 5 hours 58 minutes before
MTZ005-006-007-008-062345- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BILLINGS MT 340 PM MDT FRI JUL 6 1990 THUNDERSTORMS CONTINUED TO DEVELOP RAPIDLY IN CENTRAL AND NORTH CENTRAL MONTANA. AT 3 35 PM MDT...THE STRONGEST THUNDERSTORMS INDICATED ON RADAR EXTENDED FROM 15 MILES WEST OF ROUNDUP IN MUSSELSHELL COUNTY TO NEAR WINNETT IN PETROLEUM COUNTY. THESE THUNDERSTORMS SHOULD PRODUCE HEAVY RAINS...STRONG GUSTY WINDS AND POSSIBLE HAIL. PEOPLE IN MUSSELSHELL...PETROLEUM...AND ALSO GARFIELD COUNTIES OF MONTANA SHOULD BE ALERT FOR THESE THUNDERSTORMS UNTIL 5 45 PM MDT. OTHER SHOWERS AND THUNDERSTORMS WERE NOTED IN WHEATLAND...GOLDEN VALLEY...JUDITH BASIN...CHOUTEAU...FERGUS...AND BLAINE COUNTIES OF CENTRAL AND NORTH CENTRAL MONTANA AT 3 35 PM MDT. < ALL THE THUNDERSTORMS WERE MOVING NORTHEAST AT 30 MPH. END/KARR
Special weather statement, Jul 6, 4:51 PM MDT, 4 hours 51 minutes before
MTZ005-006-007-008-070045- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BILLINGS MT 445 PM MDT FRI JUL 6 1990 THUNDERSTORMS CONTINUED TO GRUMBLE IN CENTRAL AND NORTH CENTRAL MONTANA. AT 435 PM MDT...THE STRONGEST STORMS WERE 45 MILES NORTH OF WINNETT IN SOUTHERN PHILLIPS COUNTY...45 MILES SOUTHWEST OF JORDAN IN SOUTHWEST GARFIELD COUTY...AND 10 MILES NORTHEAST AND 15 MILES SOUTHWEST OF ROUNDUP IN MUSSELSHELL COUNTY. THE STORM WERE MOVING NORTHEAST AT 30 MPH AND SHOULD PRODUCE HEAVY RAINS...STRONG AND GUSTY WINDS...AND POSSIBLE HAIL. PEOPLE IN SOUTHERN PHILLIPS...GARFIELD AND MUSSELSHELL COUNTIES OF MONTANA SHOULD REMAIN ALERT FOR THESE STORMS UNTIL 6 45 PM MDT. OTHER SHOWERS AND THUNDERSTORMS WERE NOTED IN THE CENTRAL AND NORTH CENTRAL MONTANA COUNTIES OF WHEATLAND...JUDITH BASIN...FERGUS... PETROLEUM...PHILLIPS...GARFIELD...MUSSELSHELL...AND GOLDEN VALLEY. THESE SHOWERS AND THUNDERSTORMS WERE ALSO MOVING NORTHEAST AT 30 MPH. END/KARR
Special weather statement, Jul 6, 4:57 PM MDT, 4 hours 45 minutes before
MTZ005-006-007-008-070045- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY...CORRECTED TYPO NATIONAL WEATHER SERVICE BILLINGS MT 445 PM MDT FRI JUL 6 1990 THUNDERSTORMS CONTINUED TO GRUMBLE IN CENTRAL AND NORTH CENTRAL MONTANA. AT 435 PM MDT...THE STRONGEST STORMS WERE 45 MILES NORTH OF WINNETT IN SOUTHERN PHILLIPS COUNTY...45 MILES SOUTHWEST OF JORDAN IN SOUTHWEST GARFIELD COUNTY...AND 10 MILES NORTHEAST AND 15 MILES SOUTHWEST OF ROUNDUP IN MUSSELSHELL COUNTY. THE STORMS WERE MOVING NORTHEAST AT 30 MPH AND SHOULD PRODUCE HEAVY RAINS...STRONG AND GUSTY WINDS...AND POSSIBLE HAIL. PEOPLE IN SOUTHERN PHILLIPS...GARFIELD AND MUSSELSHELL COUNTIES OF MONTANA SHOULD REMAIN ALERT FOR THESE STORMS UNTIL 6 45 PM MDT. OTHER SHOWERS AND THUNDERSTORMS WERE NOTED IN THE CENTRAL AND NORTH CENTRAL MONTANA COUNTIES OF WHEATLAND...JUDITH BASIN...FERGUS... PETROLEUM...PHILLIPS...GARFIELD...MUSSELSHELL...AND GOLDEN VALLEY. THESE SHOWERS AND THUNDERSTORMS WERE ALSO MOVING NORTHEAST AT 30 MPH. END/KARR
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:24 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure | 66 min |
| Jul 6, 10:13 PM MDT | Tornado Warning | BYZ | Custer, Rosebud | 32 min |
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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.