Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 1, NWS Great Falls, MT
NWS Great Falls, MT issued this severe thunderstorm warning at Apr 28, 2000, 6:03 PM MDT for Fergus County, Montana. It was in force for 42 min. No storm report in the archive falls 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.
The facts
- Issued
- Apr 28, 2000, 6:03 PM MDT (00:03 UTC)
- Expired
- Apr 28, 2000, 6:45 PM MDT
- In force
- 42 min
- Issued by
- NWS Great Falls, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Fergus County, MT
The radar
The Billings radar (KBLX), 138 km from the middle of the area, began a volume at 00:07 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 nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 0.1 hours before the alert went out and 133 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
- 10 J/kg
- Mixed-layer CIN
- -17 J/kg
- Mixed-layer LCL
- 1105 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -33 m²/s²
- 0-3 km storm-relative helicity
- -16 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
697 WUUS55 KTFX 290005 SVRGTF MTC027-290045- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE GREAT FALLS MT 603 PM MDT FRI APR 28 2000 THE NATIONAL WEATHER SERVICE IN GREAT FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL FERGUS COUNTY IN MONTANA THIS INCLUDES THE CITY OF LEWISTOWN * UNTIL 645 PM MDT * AT 558 PM MDT...A SEVERE THUNDERSTORM WAS REPORTED JUST EAST OF LEWISTOWN...MOVING NORTHEAST AT 40 MPH. WIND GUSTS OVER 60 MPH HAVE BEEN REPORTED WITH THIS STORM. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN GREAT FALLS. LAT...LON 4710 10952 4691 10943 4702 10804 4727 10810 $$ BRUSDA NNNN
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 Apr 28, 3:00 PM MDT, 3 hours 3 minutes earlier.
Area forecast discussion, Apr 28, 3:00 PM MDT, 3 hours 3 minutes before
SOUTHWEST AND NORTH CENTRAL MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GREAT FALLS MT 300 PM MDT FRI APR 28 2000 CURRENT SATELLITE AND RADAR SHOW EXPANDING AREA OF SHOWERS AND THUNDERSTORMS OVER SOUTHWEST CWA. NORTHERLY FLOW ALOFT CONTINUES TO SLOWLY ADVANCE EASTWARD AS PER MODELS. COLD FRONT TEASING US IN GTF SHOULD PUSH THROUGH BY 4PM. BEST DYNAMICS BEHIND THE FRONT AND IT LOOKS AS THOUGH MOST OF CWA WILL SEE 6 HOUR WINDOW OF OPPORTUNITY FOR PRECIPITATION (MAINLY BETWEEN MIDNIGHT AND 6AM). BEST CHANCES OF RAIN OVER THE SOUTHERN PORTIONS OF CWA. RAPID CLEARING TOMORROW BUT WILL KEEP SOME CHICKEN 20% POPS IN DUE TO MORNING SHOWERS. SIGNIFICANT WARMUP SUNDAY. DITTMANN EXTENDED DISCUSSION...NEW LONG RANGE PROGS FORECAST WARM UPPER RIDGE OVER AREA MONDAY. THEN IT LOOKS LIKE ONE OR TWO SHORT WAVES MOVING NORTHEAST INTO SOUTHWEST CANADA AND PACIFIC NORTHWEST TUESDAY AND WEDNESDAY...BUT DETAILS IN THE PROGS VARY...SO WILL BROAD BRUSH AND GO A SLIGHT BIT COOLER WITH SOME MAINLY MOUNTAIN SHOWERS BY WEDNESDAY. OARD GTF 6200 HLN 6200 HVR 6300
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.