Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 87, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 23, 2000, 6:43 PM MDT for Golden Valley County, Stillwater County, Yellowstone County, Montana. It was in force for 62 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 23, 2000, 6:43 PM MDT (00:43 UTC)
- Expired
- Jul 23, 2000, 7:45 PM MDT
- In force
- 62 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
Counties Golden Valley County, MT, Stillwater County, MT, Yellowstone County, MT
The nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 0.7 hours before the alert went out and 206 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 4080 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 21 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS55 KBYZ 240044
SVRBIL
MTC037-095-111-240145-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
643 PM MDT SUN JUL 23 2000
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN STILLWATER COUNTY IN SOUTH CENTRAL MONTANA
WESTERN YELLOWSTONE COUNTY IN SOUTH CENTRAL MONTANA
* UNTIL 745 PM MDT
* AT 643 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM WITH DAMAGING WINDS 15 MILES NORTHWEST OF
LAUREL...OR ABOUT 20 MILES WEST OF BILLINGS...MOVING EAST AT 40
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
BILLINGS BY 705 PM MDT.
LOCKWOOD5 BY 710 PM MDT.
HUNTLEY...SHEPHERD BY 720 PM MDT.
$$
LAT...LON 4613 10914 4559 10915 4561 10889 4563 10884
4564 10819 4598 10819 4613 10821What 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.
NWS Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 2:32 PM MDT, 4 hours 11 minutes earlier.
Area forecast discussion, Jul 23, 2:32 PM MDT, 4 hours 11 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION...CORRECTION NATIONAL WEATHER SERVICE BILLINGS MT 232 PM MDT SUN JUL 23 2000 .MON AND TUE... FRONT HAS PASSED BILLINGS AND IS MORE OR LESS ON TARGET AS PER BOTH AVN AND ETA MODELS. HIGHER DEW POINTS OVER EASTERN ZONES WITH REASONABLE SHEAR AS DEPICTED BY BOTH ETA AND AVN SOUNDINGS SETS THE STAGE FOR POSSIBLE SEVERE THUNDERSTORMS THERE THIS EVENING AND THIS WILL BE MENTIONED. SURFACE ANALYSIS SHOWS A SECONDARY TROUGH BEHIND THE FRONT WHICH SHOULD SET OFF SOME THUNDERSTORMS BEHIND THE FRONT AS WELL. MOST THUNDERSTORM ACTIVITY SHOULD BE DURING THE EVENING HOURS AND HIGH BASED STORMS APPEAR TO BE THE PRINCIPAL TYPE AFFECTING THE COUNTY WARNING AREA THIS TIME. BOTH ETA AND AVN APPEAR TO HAVE INITIALIZED RATHER WELL ACCORDING TO SATELLITE IMAGERY. SATELLITE DERIVED WINDS WERE NOT AVAILABLE. BOTH AVN AND ETA INDICATE A MORE STABLE SITUATION OVER THE COUNTY WARNING AREA MONDAY THROUGH TUESDAY AS THE UPPER RIDGE REBOUNDS. THE FLY IN THE OINTMENT...HOWEVER...ARE DISTURBANCES MOVING OVER NORTHEAST MONTANA ON NORTHWEST FLOW. FROM WHAT CAN BE DISCERNED WITH THESE IS THAT THEY SHOULD HAVE LITTLE AFFECT OVER THE EASTERN ZONES. THIS IS SOMETHING...HOWEVER...THAT WILL HAVE TO BE WATCHED. FOR THE NOW...AM NOT PLANNING TO MENTION PRECIPITATION THERE AFTER THE STORMS TONIGHT INTO EARLY MONDAY MORNING EXIT EASTERN MONTANA...EXCEPT FOR FALLON COUNTY WHERE ISOLATED PRECIPITATION COULD HIT MONDAY AFTERNOON AS WELL AS LINGERING MORNING SHOWERS. WINDS TONIGHT INTO MONDAY WILL BE ON THE BREEZY SIDE...WITH THESE SUBSIDING MONDAY NIGHT INTO TUESDAY. AM LOOKING FOR COOLER TEMPERATURES MONDAY...WITH WARMER READINGS ON TUESDAY AS THE UPPER RIDGE SETTLES IN. CHB .WED...THU...AND FRI... RIDGE SLOWLY SHIFTS EASTWARD ON WED WITH DISTURBANCES MOVING THROUGH OVERALL FLOW ON THU AND FRI WITH THUNDERSTORMS DEVELOPING LATE IN THE DAY THU AND FRI. MAIN ACTIVITY WILL BE CONFINED TO THE SOUTHEAST CORNER ON FRI...AFTER RIDGE HAS SHIFTED AND THICKNESS VALUES HAVE FALLEN. WILL TREND TEMPS ON A DOWNWARD PATTERN AFTER WED...YET KEEP READINGS AROUND NORMAL. SPRINGER BIL BBBTT 060/086 059/088 056/089 059/086 059/086 522000 54 LVM BBBTT 053/083 052/086 053/085 055/085 055/085 522000 54 HDN BBBTT 058/088 057/090 055/090 057/088 057/088 522000 54 MLS BBBTT 064/087 061/089 059/089 059/089 062/086 523000 54 4BQ BBBTT 061/085 059/087 056/090 058/090 058/088 523000 54 BHK BBBTT 058/082 051/085 055/088 057/088 057/085 523200 54 SHR BBBTT 055/086 053/088 054/089 054/089 054/087 522000 54
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 23, 7:45 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Treasure, Yellowstone | 60 min |
| Jul 23, 8:50 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 60 min |
| Jul 23, 8:53 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Fallon | 52 min |
| Jul 23, 9:10 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Powder River, Rosebud | 65 min |
| Jul 23, 9:46 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 59 min |
| Jul 23, 10:47 PM MDT | Severe Thunderstorm Warning | BYZ | Carter, Powder River | 58 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000
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.