Severe Thunderstorm Warning 151, NWS Glasgow, MT

Issued

Aug 1, 2000, 7:17 PM MDT (01:17 UTC)

Expired

Aug 1, 2000, 8:00 PM MDT

In force

43 min

Issued by

NWS Glasgow, MT

Area

Whole counties; the outline is the Mesonet’s reconstruction

County Phillips County, MT

The Glasgow radar (KGGW), 93 km from the middle of the area, began a volume at 01:18 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.

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.

998 
WUUS55 KGGW 020118
SVRGGW
MTC071-020200-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
717 PM MDT TUE AUG 1 2000

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN PHILLIPS COUNTY IN NORTHEAST MONTANA

* UNTIL 800 PM MDT

* AT 713 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 16 MILES NORTH OF FRENCHMAN RESERVOIR...OR
  ABOUT 47 MILES NORTHEAST OF MALTA...MOVING SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  FRENCHMAN RESERVOIR BY 755 PM MDT

LARGE HAIL...DAMAGING WINDS...AND HEAVY RAINFALL ARE LIKELY WITH THIS
STORM. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM HAS PASSED.

LAT...LON 4901 10721 4901 10761 4869 10760 4869 10721

.END 

91

NWS Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 1, 2:16 PM MDT, 5 hours 1 minute earlier.

NORTHEAST MONTANA AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
216 PM MDT TUE AUG 1 2000

TSTORMS ASSOCIATED WITH SHORT WAVE OVER S SASK EXITING E ZONES...
CLEARING SKIES ACROSS CWA DURING AFTERNOON UNDER JET FROM OREGON
COAST THRU XTRM NEMONT. SFC TROF/COOL FRONT LINGERING ACROSS W CNTRL
MT WITH MODEST PRESSURE FALLS ACROSS CNTRL MT INTO W CWA ZONES.

AVN AND ETA IN GOOD AGREEMENT BUT FAVOR ETA WHICH APPEARS TO HAVE
BETTER TIMING OF FEATURES ON WV IMAGERY. NEXT SHORT WAVE TIMED BY
ETA TO APPROACH W ZONES AFTER 3Z...AVN EVEN LATER. ETA LACKS
CONVECTIVE FEEDBACK OF MCS...HENCE INCLINED TO KEEP POPS SCTD RATHER
THAN LIKELY. WILL MENTION POTENTIAL FOR SVR DURING FIRST PD W HALF
OF CWA DUE TO INCREASING MID AND LOW LVL MOISTURE WITH APPROACH OF
DYNAMIC SUPPORT. EVEN RELATIVELY QUICK ETA SLOW...TAKES SFC TROF
ONLY TO E ZONES THRU 3RD PD BEFORE WASHING OUT AS ZONAL FLOW BACKS
SLIGHTLY. PATTERN BECOMES MORE STABLE DURING 3RD INTO 4TH PD...ISOLD
POPS EAST 3RD PD...NO MENTION OF POPS LATER. NGM AND AVN MOS HAVE
BEEN RUNNING COOL AND WARM...RESPECTIVELY...AND FAVOR SPLITTING
DIFFERENCE. NO RADICAL TEMP CHANGES...JUST SLIGHT WARMING...AS W
CONUS RIDGE REBOUNDS SLIGHTLY.              SECORA

EXTENDED...MRF AND CMC ARE SIMILAR IN IDEA...HOWEVER THERE IS A
TIMING DIFFERENCE WITH THE MAIN WAVE MOVING ACROSS THE AREA. THE MRF
IS QUICKER WITH A SUNDAY ENTRY...WHERE THE CMC HOLDS THE WAVE BACK
ALONG THE ORE/WA COAST AND KEEPS NEMONT IN SW. WILL GO WITH A
COMPROMISE SOLUTION FOR THE EXTENDED. WILL HAVE ISO TSRA FRI AND
SAT...AND SCT TSRA ON SUNDAY AS THE WAVE NEARS NEMONT. FOR TEMPS
WILL GO WITH A SLIGHTLY COOLER THAN THE FMR GUIDANCE AND WELL UNDER
THE MEX GUIDANCE TEMPS FOR THE FORECAST PERIOD.           PROTON

KGGW TUTTT 064/091 062/092 059/086 059/085 058/082 864211/94223
KGDV TBTTT 066/091 064/093 053/088 055/087 053/085 864421/94222

Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000

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; radar from the NEXRAD Level II archive.