Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 94, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Aug 1, 2000, 4:10 PM MDT for Fergus County, Montana. It was in force for 50 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
- Aug 1, 2000, 4:10 PM MDT (22:10 UTC)
- Expired
- Aug 1, 2000, 5:00 PM MDT
- In force
- 50 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties
County Fergus County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 1, 4:15 PM MDT | Hail 0.88 | Grassrange, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 1, 4:00 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 10.2 hours before the alert went out and 106 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
- 38 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 2886 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 45 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 012212 SVRGTF MTC027-012300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 410 PM MDT TUE AUG 1 2000 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN FERGUS COUNTY IN CENTRAL MONTANA * EXTENDED UNTIL 500 PM MDT * AT 410 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 14 MILES WEST OF GRASS RANGE MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE... 4 MILES SOUTH OF GRASS RANGE AT 420 PM MDT LARGE HAIL IS POSSIBLE WITH THIS SEVERE THUNDERSTORM. IF YOU ARE IN THE PATH OF THE STORM... MOVE TO A SUBSTANTIAL SHELTER. 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 1000 PM MDT TUESDAY EVENING FOR- NORTH CENTRAL AND CENTRAL MONTANA. $$ LAT...LON 4704 10918 4682 10912 4685 10851 4716 10853
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 Aug 1, 3:00 PM MDT, 1 hour 10 minutes earlier.
Area forecast discussion, Aug 1, 3:00 PM MDT, 1 hour 10 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT TUE AUG 1 2000 UPPER LOW MOVING EWD ACROSS WRN ALBERTA...WITH UPPER HIGH STATIONARY OVER THE GREAT BASIN. WEAK UPPER LEVEL RIDGE OVER MONTANA. SURFACE FRONT MOVING SLOWLY EWD ACROSS CWA. WATER VAPOR IMAGERY SHOWS SHORT WAVE MOVING EWD INTO SWRN MT...ETA MODEL HANDLING THIS FEATURE QUITE WELL. THIS FEATURE ALONG WITH DECREASING STABILITY THIS AFTERNOON AND EVENING WILL FIRE SOME THUNDERSTORMS OVER SWRN ZONES...WITH MOVE ACTIVITY EXPECTED IN EASTERN CWA IN VICINITY OF SFC FRONT. ACTIVITY WILL DIE OFF FROM WEST TO EAST AFTER SUNSET. AIRMASS BECOMES INCREASINGLY STABLE AND DRIER TONIGHT...LASTING THROUGH THURSDAY...AS FLAT UPPER RIDGE BUILDS OVER AREA. AFTER TEMPERATURES COOL A BIT INTO WED...THICKNESSES INCREASE ONCE AGAIN FOR WARMING TEMPERATURES ON THUR. THERE REMAINS THE THREAT OF ISOLD AFTN/EVE TSTMS OVER MOUNTAINS WED-THUR. JOHNSON EXTENDED DISCUSSION... BOTH MRF AND ECMWF MODELS HAS H5 RIDGE OVER AREA WITH A DEVELOPING TROF OVR THE PAC NW. MRF HAS PAC NW TROF MORE PROGRESSIVE BY SUNDAY...WHILE ECMWF HAS RIDGE OVR ERN MT. CONTINUED WARM AND MAINLY DRY WEATHER THROUGH SATURDAY...WITH A CHANCE OF THUNDERSTORMS SUNDAY. CCF NUMBERS GTF UU 054/091 053/093 057 121000 CTB UU 050/086 049/088 053 120001 HLN BB 055/092 053/094 056 122211 BZN BB 052/092 050/093 052 122211 WEY BB 042/084 040/086 043 123211 DLN BB 051/088 048/089 050 122211 HVR UU 056/092 053/093 056 123300 LWT BU 053/087 051/089 054 123300
The office that day
Everything else NWS Great Falls, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:34 PM MDT | Severe Thunderstorm Warning | TFX | Fergus | 41 min |
Nearby
Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000
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.