Alert archive / Montana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 162, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 15, 2001, 3:31 PM MDT for Treasure County, Montana. It was in force for 59 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 15, 2001, 3:31 PM MDT (21:31 UTC)
- Expired
- Jul 15, 2001, 4:30 PM MDT
- In force
- 59 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Treasure County, MT
The radar
The Billings radar (KBLX), 110 km from the middle of the area, began a volume at 21:30 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 15, 2:00 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.5 hours before the alert went out and 229 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
- 429 J/kg
- Mixed-layer CIN
- -191 J/kg
- Mixed-layer LCL
- 1665 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 82 m²/s²
- 0-3 km storm-relative helicity
- 120 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Jul 15, 2:30 PM MDT, 1 hour 1 minute earlier.
Area forecast discussion, Jul 15, 2:30 PM MDT, 1 hour 1 minute before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
230 PM MDT SUN JUL 15 2001
.MON AND TUE...
WAVE PUSHES NORTH THROUGH AREA TONIGHT FOR MAINLY EVENING
THUNDERSTORMS.
MONDAY...UPPER LOW MOVES ONTO PACIFIC NORTHWEST COAST. SURFACE LOW
DEVELOPS IN RESPONSE OVER SOUTHWEST MONTANA..WITH SOUTH TO SOUTHEAST
LOW LEVEL FLOW OVER EASTERN MONTANA. POSSIBILITY OF A WAVE IN SOUTHWEST
FLOW INTERACTING WITH THE SURFACE LOW FOR SCATTERED POPS. MOISTURE
NOT AS MOIST AS LAST FEW DAYS WITH SUBTROPICAL MOISTURE GETTING SHUNTED
TO THE EAST.
TUESDAY...MID LEVEL FLOW BECOMES MORE CONFLUENT AS UPPER LOW MOVES
CLOSER TO AREA. THICKNESS DON'T DROP TOO MUCH...BUT SHOULD BE SLIGHTLY
COOLER. SURFACE TROUGH EDGES TO THE EAST FOR CONTINUED CHANCE OF
THUNDERSTORMS...BUT NOT AS GOOD AS MAIN ENERGY CONTINUES TO SHIFT TO
THE EAST INTO THE PLAINS.
.WED...THU...FRI...SAT...SUN...
UPPER LOW SLOWLY LUMBERS ACROSS THE SOUTHERN CANADA THROUGH THURSDAY.
EXTENDED MODELS PRETTY CONSISTENT ON THIS WILL SOME SMALL DIFFERENCES IN
TIMING. OVERALL TREND OF SOUTHWEST FLOW CONTINUING DAYS 3-5 LOOKS GOOD.
THE UPPER TROUGH PUSHES EAST ON SATURDAY AS ANOTHER UPPER LOW FORMS OFF
THE PACIFIC NORTHWEST COAST. THE ECMWF IN WEAKER AND FARTHER EAST WITH
THIS LOW. THE MRF BUILDS A SMALL SCALE RIDGE OVER FORECAST AREA IN
RESPONSE TO UPPER LOW FORMING. THIS RIDGE TO HOLD IN PLACE OVER THE
WEEKEND. WILL KEEP CONVECTION IN THROUGH FRIDAY AND GO MAINLY DRY OVER
THE WEEKEND. HUMPHREY
MON TUE WED THU FRI SAT SUN
-----------------------------------------------------------
BIL 060/087 059/084 060/083 060/085 060/085 060/088 062/092
43/T 32/T 33/T 33/T 33/T 22/B 11/B
LVM 055/085 055/081 056/081 056/083 056/083 058/087 058/091
34/T 42/T 33/T 33/T 33/T 22/B 11/B
HDN 058/089 057/087 059/085 059/087 059/087 059/089 060/093
43/T 32/T 33/T 33/T 33/T 22/B 11/B
MLS 065/092 065/088 064/087 064/087 062/087 062/089 062/093
33/T 32/T 33/T 33/T 33/T 22/B 11/B
4BQ 064/091 064/087 064/086 064/086 062/086 062/088 062/092
33/T 32/T 33/T 33/T 33/T 22/B 11/B
BHK 063/090 063/086 062/085 062/085 060/085 060/087 060/091
33/T 32/T 33/T 33/T 33/T 22/B 11/B
SHR 055/087 055/084 056/083 056/085 056/085 058/088 058/092
43/T 32/T 33/T 33/T 33/T 22/B 11/BThe office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 6:56 PM MDT | Flash Flood Warning | BYZ | Carbon | 2 hr |
| Jul 14, 7:00 PM MDT | Flash Flood Warning | BYZ | Yellowstone | 2 hr |
| Jul 14, 7:21 PM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 54 min |
| Jul 14, 7:49 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 56 min |
| Jul 14, 8:20 PM MDT | Flash Flood Warning | BYZ | Big Horn | 115 min |
| Jul 14, 8:29 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 61 min |
| Jul 14, 11:13 PM MDT | Flash Flood Warning | BYZ | Carter | 2 hr |
| Jul 15, 3:17 PM MDT | Flash Flood Warning | BYZ | Treasure | 3 hr |
| Jul 15, 4:44 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 61 min |
| Jul 15, 5:31 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 59 min |
| Jul 15, 5:44 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 61 min |
| Jul 14, 7:30 PM MDT | Severe Thunderstorm Warning | BYZ | Sheridan | 60 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.