Alert archive / Montana / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 50, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Jul 16, 2001, 4:28 PM MDT for Cascade County, Judith Basin County, Meagher County, Montana. It was in force for 47 min. 2 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jul 16, 2001, 4:28 PM MDT (22:28 UTC)
- Expired
- Jul 16, 2001, 5:15 PM MDT
- In force
- 47 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Cascade County, MT, Judith Basin County, MT, Meagher County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 16, 4:50 PM MDT | Thunderstorm Wind 52 E | Monarch, MT | Actual spotter location Monarch 3 N. |
| Jul 16, 4:55 PM MDT | Thunderstorm Wind 52 E | Raynesford, MT | Actual spotter location Raynesford 2 NW. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 16, 1:45 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 10.5 hours before the alert went out and 60 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
- 1797 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 56 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 KTFX 162227 SVRGTF MTC013-045-059-162315- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 428 PM MDT MON JUL 16 2001 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN CASCADE COUNTY IN CENTRAL MONTANA NORTHWESTERN JUDITH BASIN COUNTY IN CENTRAL MONTANA NORTH CENTRAL MEAGHER COUNTY IN CENTRAL MONTANA * UNTIL 515 PM MDT * AT 428 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER NEIHART...OR ABOUT 29 MILES SOUTHWEST OF STANFORD...MOVING NORTHEAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... 8 MILES SOUTHEAST OF MONARCH AT 440 PM MDT REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN GREAT FALLS. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM MDT MONDeAY EVENING FOR WESTERN MONTANA. LAT...LON 4689 11118 4674 11099 4690 11031 4732 11069
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 Great Falls, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 16, 3:00 PM MDT, 1 hour 28 minutes earlier.
Area forecast discussion, Jul 16, 3:00 PM MDT, 1 hour 28 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT MON JUL 16 2001 THE PATTERN IS QUITE SIMILAR TO THE PAST FEW DAYS. LOW PRESSURE CENTERED OVER WA AND BRITISH COLUMBIA...AND A TROF EXTENDING DOWN ACROSS THE PAC NW. MOST OF THE INDICES LOOK A LITTLE MORE THREATENING THAN YESTERDAY...AND CERTAINLY THE WIND SHEAR PATTERN IS QUITE A BIT BETTER FOR SEVERE WEATHER THAN YESTERDAY. MOST IMPORTANTLY...A SHORT WAVE PUSHES THRU LATER THIS AFTERNOON AND EVENING...WITH AN ASSOCIATED SURFACE FRONT. WATCH BOX 559 HAS ALREADY BEEN ISSUED FOR THE ERN CWA OF MSO AND MOST OF OUR CWA. TUESDAY ONWARD NOT TOO MUCH CHANGE GOING ON. SURFACE TEMPS SHOULD TREND A LITTLE COOLER AS CAA CONTINUES...BUT AT THE SAME TIME THE HEIGHTS ALOFT WILL BE DROPPING. THUS AIRMASS REMAINS RELATIVELY UNSETTLED. ZELZER EXTENDED...SOME DIFFERENCE AMONG THE MODELS...BUT DO KEEP UPPER TROUGH OVER PACIFIC NORTHWEST FOR CONTINUED MOIST AND UNSTABLE SOUTHWEST FLOW FOR DAYS 3 AND 4. UPPER TROUGH THEN SLITS BY DAY 5 WITH THE NORTHERN BRANCH MOVING THROUGH AREA. WEAK UPPER RIDGE BUILDS BY DAY 6 AND 7 FOR DRY AND WARMER WEATHER. TEMPERATURES WILL BE A LITTLE BELOW NORMAL WITH AT OR A LITTLE ABOVE NORMAL PRECIPITATION. CCF NUMBERS GTF EE 050 078 048 074 048 135122 CTB EE 048 072 046 070 045 135122 HLN EE 050 075 048 075 048 135222 BZN EE 047 075 047 073 045 136323 WEY PEE 052 074 040 072 038 136322 DLN EE 046 072 045 072 045 135223 HVR EE 057 080 054 080 052 136122 LWT EE 050 072 050 070 048 136222
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 2:53 PM MDT | Severe Thunderstorm Warning | TFX | Jefferson, Lewis and Clark | 37 min |
| Jul 16, 2:58 PM MDT | Severe Thunderstorm Warning | TFX | Lewis and Clark | 32 min |
| Jul 16, 3:53 PM MDT | Severe Thunderstorm Warning | TFX | Cascade | 37 min |
| Jul 16, 3:55 PM MDT | Severe Thunderstorm Warning | TFX | Cascade, Meagher | 35 min |
| Jul 16, 4:34 PM MDT | Severe Thunderstorm Warning | TFX | Glacier, Pondera, Toole | 41 min |
| Jul 16, 5:18 PM MDT | Severe Thunderstorm Warning | TFX | Toole | 42 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.