Alert archive / Montana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 18, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jun 8, 2001, 7:57 PM MDT for Big Horn County, Yellowstone County, Montana. It was in force for 63 min. 2 reports 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
- Jun 8, 2001, 7:57 PM MDT (01:57 UTC)
- Expired
- Jun 8, 2001, 9:00 PM MDT
- In force
- 63 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
Counties Big Horn County, MT, Yellowstone County, MT
The radar
The Billings radar (KBLX), 59 km from the middle of the area, began a volume at 01:59 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 8, 8:02 PM MDT | Hail 0.75 | Billings, MT | |
| Jun 8, 8:40 PM MDT | Hail 0.75 | Lockwood, 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.
The nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 2.0 hours before the alert went out and 287 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
- 133 J/kg
- Mixed-layer CIN
- -96 J/kg
- Mixed-layer LCL
- 2306 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 143 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What 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 Jun 8, 1:55 PM MDT, 6 hours 2 minutes earlier.
Area forecast discussion, Jun 8, 1:55 PM MDT, 6 hours 2 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
155 PM MDT FRI JUN 8 2001
.SAT AND SUN...
SOUTHWEST FLOW CONTINUES OVER THE AREA WITH SEVERAL EMBEDDED SHORT
WAVES TO MOVE THROUGH THE BILLINGS FORECAST AREA. FIRST WAVE EXPECTED
TO MOVE THROUGH AROUND 0Z THIS EVENING. MOISTURE CONTINUES TO ADVECT
INTO THE AREA AND WITH AFTERNOON HEATING...ATMOSPHERE HAS BECOME
VERY UNSTABLE. POTENTIAL FOR SEVERE WEATHER FROM BILLINGS EASTWARD
LOOKS GOOD FOR TONIGHT. ATMOSPHERE WILL REMAIN UNSTABLE SATURDAY...
ESPECIALLY OVER THE SOUTHEAST. ANOTHER SHORT WAVE TO MOVE OVER SC MT
AROUND 18Z SATURDAY...BRINGING A CHANCE FOR ISOLATED THUNDERSTORMS.
ATMOSPHERE REMAINS VERY UNSTABLE OVER THE SE AND SEVERE THUNDERSTORMS
ARE POSSIBLE AGAIN SATURDAY AFTERNOON AND EVENING. ETA AND AVN SHOWING
MAIN SHORT WAVE ENERGY TO BE OVER NORTHERN MONTANA ON SUNDAY. WEAKER
SHORT WAVE ENERGY IS PROGGED TO MOVE OVER SOUTHERN MONTANA ON SUNDAY.
ATMOSPHERE CONTINUES TO REMAIN UNSTABLE WITH THE BEST CHANCE FOR
THUNDERSTORMS OVER THE SE. RICHMOND
.MON...TUE...WED...THU...FRI...
MODELS IN GENERAL AGREEMENT IN BRINGING A SIGNIFICANT TROUGH EARLY NEXT
WEEK WITH CHANCES OF THUNDERSTORMS AND SHOWERS MONDAY AND TUESDAY. THIS
SYSTEM WILL BRING COLDER TEMPERATURES TO THE AREA WITH GUSTY WINDS AS
THE SYSTEM MOVES THROUGH THE AREA. WEAK RIDGING THEN FORMS OVER THE
NORTHERN ROCKIES WEDNESDAY THROUGH THE END OF THE WEEK FOR SLOW WARMING
AND GENERALLY DRY CONDITIONS. THORICHT
SAT SUN MON TUE WED THU FRI
-----------------------------------------------------------
BIL 055/087 058/086 054/077 047/064 044/066 047/072 049/077
43/T 22/T 44/T 43/W 22/B 22/B 22/U
LVM 050/082 049/080 052/074 045/061 041/064 045/070 047/075
43/T 22/T 44/T 43/W 22/B 22/B 22/U
HDN 054/088 055/089 055/077 045/065 044/067 046/072 048/076
43/T 44/T 44/T 43/W 22/B 22/B 22/U
MLS 058/089 057/089 057/077 049/067 044/067 049/074 049/076
44/T 43/T 44/T 43/W 22/E 22/B 22/U
4BQ 057/089 056/088 056/077 046/065 042/065 047/075 048/073
44/T 43/T 44/T 43/W 22/E 22/B 22/U
BHK 055/085 057/086 055/077 044/063 040/065 045/072 046/071
44/T 43/T 44/T 43/W 22/E 22/B 22/U
SHR 050/086 052/087 052/074 040/063 039/064 041/068 044/076
43/T 22/T 44/T 43/W 22/E 22/B 22/UThe office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 6:16 PM MDT | Severe Thunderstorm Warning | BYZ | Wheatland | 29 min |
| Jun 8, 7:12 PM MDT | Severe Thunderstorm Warning | BYZ | Carbon, Yellowstone | 48 min |
| Jun 8, 8:36 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 54 min |
| Jun 8, 11:16 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 44 min |
| Jun 8, 11:19 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn, Rosebud | 41 min |
| Jun 9, 12:54 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 66 min |
| Jun 9, 1:16 AM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 59 min |
| Jun 9, 3:14 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 61 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2001Every severe thunderstorm warning in 2001
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; radar from the NEXRAD Level II archive.