Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 73, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 8, 2002, 7:45 PM MDT for Rosebud County, Montana. It was in force for 60 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 8, 2002, 7:45 PM MDT (01:45 UTC)
- Expired
- Jul 8, 2002, 8:45 PM MDT
- In force
- 60 min
- Issued by
- NWS Billings, MT
- Area
- Counties, with a storm outline in the text
County Rosebud County, MT
The radar
The Billings radar (KBLX), 151 km from the middle of the area, began a volume at 01:45 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 |
|---|---|---|---|
| Jul 8, 8:30 PM MDT | Thunderstorm Wind 90 E | Hathaway, MT | Mile marker signs and satellite dish blown over |
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
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 1.8 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
- 1112 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 1849 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 182 m²/s²
- 0-3 km storm-relative helicity
- 543 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 15.2
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 Jul 8, 2:12 PM MDT, 5 hours 33 minutes earlier.
Area forecast discussion, Jul 8, 2:12 PM MDT, 5 hours 33 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
212 PM MDT MON JUL 8 2002
.SHORT TERM...VALID FOR TUE...WED...THU...
SEVERE WEATHER THE MAIN CONCERN THIS EVENING. STRONG SYSTEM WILL TAKE
BEST DYNAMICS TO THE NORTH OF FORECAST AREA. STRONG CAP IN PLACE IS
ERODING SOME WITH STRONG SFC HEATING. EXPECT SOME THUNDERSTORMS TO
DEVELOP IN THE MOUNTAINS THIS AFTERNOON AND MOVE OUT INTO PLAINS
WITH FRONTAL PASSAGE. STORMS WILL END EARLY IN THE WEST...AND LINGER
IN THE EASTERN ZONES PAST MIDNIGHT WITH NORTHERN ZONES HAVING BEST
CHANCE OF SEVERE. AIRMASS WILL STABILIZE AFTER FRONTAL PASSAGE WITH
MUCH COOLER TEMPS TUESDAY.
UPPER LOW WILL HAVE SOME INFLUENCE ON EASTERN ZONES TUESDAY NIGHT AND
WEDNESDAY WITH A FEW MORE CLOUDS AND COOLER TEMPS. OTHERWISE EXPECT
RIDGE TO SURGE BACK INTO WESTERN ZONES THROUGH THE LATER PERIODS AND
HOT TEMPS TO RETURN. FORECAST WILL BE DRY AFTER TONIGHT. SCARLETT
.LONG TERM...VALID FOR FRI...SAT...SUN...MON...
UPPER RIDGE IN CONTROL OF WEATHER PATTERN FOR MUCH OF THE EXTENDED.
SHORTWAVE ENERGY ROTATING AROUND RIDGE MAY SNEAK IN TO FAR EASTERN
ZONES ON FRIDAY BEFORE RIDGE AXIS PUSHES EAST. HOWEVER...ANY CHANCE OF
STORMS WOULD BE ISOLATED AT BEST SO WILL NOT MENTION IN FORECAST.
SUNDAY AND MONDAY UPPER LOW OVER CANADA WORKS TO BREAK DOWN RIDGE
SOME AND PUT AREA IN MORE SOUTHWESTERLY FLOW. WILL CONTINUE WITH DRY
FORECAST FOR NOW...WITH HIGH TEMPERATURES GENERALLY IN THE NINETIES
THROUGH THE EXTENDED. JZ
TUE WED THU FRI SAT SUN MON
-----------------------------------------------------------
BIL 057/086 056/089 060/093 064/093 062/094 064/091 062/091
30/U 00/U 00/U 00/U 00/U 00/U 00/U
LVM 047/083 047/092 053/092 055/094 054/093 055/092 054/092
20/U 00/U 00/U 00/U 00/U 00/U 00/U
HDN 056/087 055/090 059/095 064/094 063/096 063/093 060/092
40/U 00/U 00/U 00/U 00/U 00/U 00/U
MLS 060/087 057/089 063/095 067/092 065/095 065/094 063/091
40/U 00/U 00/U 00/U 00/U 00/U 00/U
4BQ 058/086 057/088 062/094 066/093 064/094 064/093 062/090
30/U 00/U 00/U 00/U 00/U 00/U 00/U
BHK 060/085 053/084 061/091 065/090 064/092 064/090 060/085
40/U 00/U 00/U 00/U 00/U 00/U 00/U
SHR 055/086 055/089 057/092 060/093 060/091 060/091 056/091
30/U 00/U 00/U 00/U 00/U 00/U 00/U
.BYZ...
MT...SEVERE THUNDERSTORM WATCH ZONES 028-029-042 TIL 700 PM.
RED FLAG WARNING MT FIRE ZONES 124-133 UNTIL MIDNIGHT.
WY...RED FLAG WARNING WY FIRE ZONE 284 UNTIL MIDNIGHT.The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 8:40 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 65 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2002Every severe thunderstorm warning in 2002
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.