Alert archive / Montana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 72, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 6, 2002, 10:41 PM MDT for Big Horn County, Montana. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 6, 2002, 10:41 PM MDT (04:41 UTC)
- Expired
- Jul 6, 2002, 11:15 PM MDT
- In force
- 34 min
- Issued by
- NWS Billings, MT
- Area
- Counties, with a storm outline in the text
County Big Horn County, MT
The radar
The Billings radar (KBLX), 87 km from the middle of the area, began a volume at 04:44 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Riverton, WY (KRIW), launched 00:00Z, 4.7 hours before the alert went out and 271 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
- 713 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 2675 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 78 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS55 KBYZ 070441 SVRBYZ MTC003-070515- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BILLINGS MT 1040 PM MDT SAT JUL 6 2002 THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL BIG HORN COUNTY IN SOUTH CENTRAL MONTANA * UNTIL 1115 PM MDT * AT 1040 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER ST. XAVIER...OR ABOUT 20 MILES SOUTH OF HARDIN...MOVING SOUTHEAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF... CENTRAL BIG HORN COUNTY. VERY LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM...PUT YOUR CAR IN A GARAGE AND MOVE TO A SUBSTANTIAL SHELTER. LAT...LON 4558 10770 4545 10788 4523 10761 4539 10738
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 6, 8:40 PM MDT, 2 hours 1 minute earlier.
Area forecast discussion, Jul 6, 8:40 PM MDT, 2 hours 1 minute before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
840 PM MDT SAT JUL 6 2002
.SHORT TERM...VALID FOR SUN...MON...TUE...
ANALYSIS OF UPPER AIR CONTINUES TO SHOW SOUTHWEST FLOW ALOFT. FAIRLY
LIGHT FLOW AT THE 700 MB LEVEL AND BELOW. THUS...THUNDERSTORMS SO FAR
HAVE BEEN BASICALLY STACKED. LOOKING AT SATELLITE AND RADAR
DEPICTIONS...MORE STORMS COULD AFFECT THE COUNTY WARNING AREA. FOR THE
NOW...BELIEVE THAT TIMING THEM TO END MAY NOT BE WISE. TEMPERATURES
LOOK REASONABLE FOR TONIGHT. AM NOT PLANNING UPDATES AT THIS TIME. CHB
.LONG TERM...VALID FOR WED...THU...FRI...SAT...
MEDIUM RANGE MODELS IN OK AGREEMENT OVERALL. RIDGE WILL REBOUND INTO
ZONES WITH A VENGEANCE WEDNESDAY. MOST MODELS HAVE 597 DM HEIGHTS
PUSHING INTO SOUTHERN MONTANA. WILL BUMP UP TEMPS FOR WEDNESDAY AS IT
LOOKS LIKE ANOTHER SCORCHER. FOR THURSDAY AND BEYOND...MODELS AGAIN IN
GOOD AGREEMENT WITH RIDGE FLATTENING DOWN AS H5 HEIGHTS LOWER SOME.
WILL GO WITH A SLIGHT COOLING TREND THROUGH THE LATER PERIODS...BUT
TEMPS WILL STILL BE HOT. WILL KEEP FORECAST DRY AS SEE LITTLE IN WAY OF
PRECIP CHANCES WITH DRY WESTERLY FLOW. SCARLETT
SUN MON TUE WED THU FRI SAT
-----------------------------------------------------------
BIL 062/092 066/097 057/090 056/095 060/093 062/090 062/090
33/T 20/G 30/U 00/U 00/U 00/U 00/U
LVM 055/087 056/092 049/087 051/091 052/089 054/089 054/089
33/T 23/T 30/U 00/U 00/U 00/U 00/U
HDN 060/095 065/099 055/093 056/097 059/094 060/092 060/092
33/T 20/G 30/U 00/U 00/U 00/U 00/U
MLS 066/094 069/099 058/093 058/098 062/094 063/091 063/091
33/T 30/G 30/U 00/U 00/U 00/U 00/U
4BQ 064/094 068/099 057/092 057/095 061/093 062/090 062/090
33/T 30/G 30/U 00/U 00/U 00/U 00/U
BHK 065/093 068/097 059/089 055/092 059/090 060/088 060/088
33/T 30/G 30/U 00/U 00/U 00/U 00/U
SHR 060/096 066/098 055/090 056/094 055/092 056/089 056/089
33/T 20/G 30/U 00/U 00/U 00/U 00/U
.BYZ...
MT...NONE.
WY...NONE.The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 8:54 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 36 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.