Alert archive / Montana / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 13, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jun 27, 1990, 7:43 PM MDT for Rosebud County, Treasure County, Montana. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Jun 27, 1990, 7:43 PM MDT (01:43 UTC)
- Expired
- Jun 27, 1990, 8:45 PM MDT
- In force
- 62 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
Counties Rosebud County, MT, Treasure 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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.7 hours before the alert went out and 224 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
- 510 J/kg
- Mixed-layer CIN
- -64 J/kg
- Mixed-layer LCL
- 2784 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- -9 m²/s²
- 0-3 km storm-relative helicity
- 100 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBIL 280149 COR
SVRBIL
MTC087-103-280245-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING CORRECTION
NATIONAL WEATHER SERVICE BILLINGS MT
743 PM MDT WED JUN 27 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 845 PM MDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE STATE OF MONTANA
NORTHWEST ROSEBUD...NORTHERN TREASURE...ALL OF
MUSSELSHELL COUNTY...INCLUDING THE CITY OF ROUNDUP
AT 740 PM MDT THIS WEDNESDAY NIGHT THE BILLINGS RADAR SHOWS
SEVERE THUNDERSTORMS IN MUSSELSHELL COUNTY. THESE STORMS ARE
NOW MOVING EAST AT 25 MPH. EARLIER THIS EVENING HEAVY RAIN AND
HAIL 1/2 INCH IN DIAMETER WAS REPORTED AT HARLOWTON, ROUNDUP AND
NORTHWEST OF RYEGATE. THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED FOR WHEATLAND, GOLDEN VALLEY AND SOUTHERN PETROLEUM
COUNTIES.
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...LIGHTNING...AND VERY HEAVY RAIN.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR
OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADWAYS QUICKLY...
AVOID DRIVING INTO AREAS WHERE WATER COVERS THE ROAD.
PEOPLE IN THE WARNING AREAS SHOULD REMAIN ALERT. IF
THRE=ATENING WEATHER IS SIGHTED GO TO A SAFE PLACE IMMEDIATELY.
WHEN IT'S SAFE PLEASE RELAY YOUR REPORT OF SEVERE WEATHER TO THE
NEAREST LAW ENFORCEMENT AGENCY.
END/MOSHIERWhat 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 27, 4:49 PM MDT, 2 hours 54 minutes before
MTZ005-006-007-008-009-WYZ001-002-003-004-005-006-280000- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BILLINGS MT 450 PM MDT WED JUN 27 1990 AT 445 PM MDT THIS WEDNESDAY AFTERNOON RADAR SHOWS THUNDERSTORMS DEVELOPING BUT STILL SCATTERED IN CENTRAL MONTANA. AT THIS TIME THE STRONGEST STORM WAS IN SOUTHWEST WHEATLAND COUNTY ABOUT 20 MILES SOUTHWEST OF HARLOWTON. THIS STORM WAS MOVING NORTH AT 30 MPH AND SHOULD PASS WEST OF HARLOWTON. PEOPLE IN CENTRAL MONTANA CAN EXPECT WIDELY SCATTERED SHOWERS AND THUNDERSTORMS EARLY TONIGHT. SOME OF THESE THUNDERSTORMS WILL CONTAIN STRONG GUSTY WINDS AND BRIEF HEAVY RAINS. THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR TMH STORMS IN THE AREA. IF STATEMENTS OR WARNINGS BECOME NECESSARY THEY WILL BE ISSUED IMMEDIATELY. END/MOSHIER
Special weather statement, Jun 27, 5:57 PM MDT, 1 hour 46 minutes before
MTZ005-006-007-008-009-WYZ001-002-003-004-005-006-280100- SPECIAL WEATHER STATEMENT AND RADAR SUMMARY NATIONAL WEATHER SERVICE BILLINGS MT 600 PM MDT WED JUN 27 1990 AT 545 PM MDT RADAR SHOWED RAPIDLY DEVELOPING THUNDERSTORMS IN CENTRAL AND NORTHERN MONTANA. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTHEAST MONTANA UNTIL 11 PM TONIGHT. AT THIS TIME THE STRONGEST STORMS WERE IN NORTHEAST MONTANA IN VALLEY...ROOSEVELT...DANIELS AND SHERIDAN COUNTIES. OTHER STRONG STORMS WERE IN AN AREA THAT EXTENDED FROM SOUTHWEST WHEATLAND COUNTY AND ON INTO EAST-CENTRAL FERGUS COUNTY. THESE STORMS WERE MOVING NORTH AT 30 MPH AND APPEAR TO CONTAIN AREAS OF HEAVY RAINS AND POSSIBLE SMALL HAIL. STAY TUNED TO YOUR LOCAL RADIO AND TELEVISION STATIONS FOR THE LATEST WEATHER CONDITIONS IN YOUR AREA. < THE NATIONAL WEATHER SERVICE WILL CONTINUE TO MONITOR THE STORMS IN THE STATE THROUGHOUT THE NIGHT. PEOPLE IN CENTRAL AND EASTERN MONTANA SHOULD BE ALERT UNTIL LATE TONIGHT FOR SCATTERED THUNDERSTORMS. SOME OF THESE STORMS WILL CONTAIN HEAVY RAIN...STRONG GUSTY WINDS... PLENTY OF LIGHTNING AND POSSIBLE HAIL. END/MOSHIER
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 8:41 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud, Treasure | 64 min |
| Jun 27, 9:40 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, Prairie | 65 min |
| Jun 27, 10:41 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Custer, Fallon, Prairie | 94 min |
| Jun 27, 10:41 PM MDT | Severe Thunderstorm Warning | BYZ | Dawson, Wibaux | 94 min |
Nearby
Severe Thunderstorm Warnings in Montana, 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; the sounding from the Mesonet's radiosonde archive.