Alert archive / Montana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 9, NWS Glasgow, MT

June 9, 2001Richland County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 9, 2001, 3:40 PM MDT for Richland County, Montana. It was in force for 35 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: Jun 9, 2001, 3:40 PM MDT (21:40 UTC)
Expired: Jun 9, 2001, 4:15 PM MDT
In force: 35 min
Issued by: NWS Glasgow, MT
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Richland County, MT

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 9, 11:45 AM MDT	Severe Thunderstorm Watch	SPC	6 hr
Jun 9, 2:45 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.7 hours before the alert went out and 180 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 37 J/kg
Mixed-layer CIN: -228 J/kg
Mixed-layer LCL: 1810 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KGGW 092140
SVRGGW
MTC083-092215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE GLASGOW MT
340 PM MDT SAT JUN 9 2001

THE NATIONAL WEATHER SERVICE IN GLASGOW HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN RICHLAND COUNTY IN NORTHEAST MONTANA

* UNTIL 415 PM MDT

* AT 331 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 11 MILES WEST OF SIDNEY...MOVING EAST AT 40
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  SIDNEY BY 345 PM MDT

A TORNADO WATCH IS ALSO IN EFFECT. SEVERE THUNDERSTORMS CAN PRODUCE
TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A
PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM IF A TORNADO IS SPOTTED.

LAT...LON 4790 10445 4748 10448 4749 10405 4789 10405

.END
95

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 Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 9, 3:05 PM MDT, 35 minutes earlier.

Area forecast discussion, Jun 9, 3:05 PM MDT, 35 minutes before

NORTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GLASGOW MT
305 PM MDT SAT JUN 9 2001

THUNDERSTORMS OVER NORTHEAST MONTANA WEAKENING. STRONGEST STORMS
ALONG BOUNDARY MOVING INTO NORTH DAKOTA. AIRMASS HAS STABLIZED
BEHIND THE CONVECTION. SOME LIGHTNING STRIKES OVER NORTHWEST MONTANA
WITH SECOND WAVE LIFTING INTO CANADA. SO FAR DOWNSLOPE IS
SUPPRESSING MOST ACTIVITY OVER CENTRAL MONTANA. STILL CHANCE OF
THUNDERSTORMS FOR LATER TODAY OVER NORTHEAST MONTANA...MOST LIKELY
ALONG CANADIAN BORDER BUT THREAT OF SEVERE JUST ABOUT OVER.

NEXT THREAT OF THUNDERSTORM WILL BE SUNDAY NIGHT AS ANOTHER WAVE
MOVES ACROSS THE REGION. CONVECTIVE PARAMETERS NOT AS IMPRESSIVE FOR
THREAT OF SEVERE WEATHER. COOLER AIR FILTERING INTO THE REGION
BEHIND SHORTWAVE FOR MORE STABLE AIRMASS ON MONDAY. EBERT

EXTENDED...LATEST AVN SEEMS TO HAVE COME AROUND TO THE CUTOFF LOW
SOLN THAT THE OTHER MODELS HAD OVER NW NOAM YESTERDAY. BASED ON THAT
FACT AND NCEP DISCUSSION WILL MOVE EXTENDED FORECAST IN THE COOLER
AND WETTER DIRECTION FOR DAYS 3-5. WILL KEEP DAYS 6-7 DRY PER MRF.
WRIGHT

KGGW 054/079 051/072 048/066 046/064 047/067 050/074 052/075
      TBTWWBB  902242/9544411
KGDV 055/082 056/074 048/068 046/065 048/069 051/074 049/075
      TBTWWBB  903243/9544411

In the hours before

Local storm report, Jun 9, 1:35 PM MDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
135 PM MDT SAT JUN 9 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

1000 AM    12 ENE JORDAN             MT   .88 INCH HAIL
06/09/01   GARFIELD

1005 AM    43 ENE JORDAN             MT   60 MPH TSTM WIND GUST
06/09/01   GARFIELD

1120 AM    20 SE CIRCLE              MT   .75 INCH HAIL
06/09/01   MCCONE

1120 AM    10 SE CIRCLE              MT   .75 INCH HAIL
06/09/01   MCCONE

1144 AM    35 S MALTA                MT   .75 INCH HAIL
06/09/01   PHILLIPS

1130 AM    LINDSAY                   MT   .75 INCH HAIL
06/09/01   DAWSON

1250 PM    48 SW GLASGOW             MT   .75 INCH HAIL
06/09/01   VALLEY

TLSJR

Local storm report, Jun 9, 2:24 PM MDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GLASGOW MT
224 PM MDT SAT JUN 9 2001

TIME(MDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0210 PM    1 S COMERTOWN             MT   .88 INCH HAIL
06/09/01   SHERIDAN

0220 PM    WESTBY                    MT   .75 INCH HAIL
06/09/01   SHERIDAN

TLSJR

Special weather statement, Jun 9, 2:55 PM MDT, 45 minutes before

MTZ016>027-059>062-092115-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
255 PM MDT SAT JUN 9 2001

...SIGNIFICANT UPDATES TO SEVERE WEATHER WATCHES IN EASTERN
MONTANA...

SEVERE THUNDERSTORM WATCH NUMBER 382 HAS BEEN CANCELLED IN THE
FOLLOWING COUNTIES:
PETROLEUM...GARFIELD...PHILLIPS...VALLEY...DANIELS...SHERIDAN AND
ROOSEVELT

TORNADO WATCH NUMBER 384 HAS REPLACED SEVERE THUNDERSTORM WATCH
NUMBER 384 IN THE FOLLOWING COUNTIES:

MCCONE...RICHLAND...DAWSON...PRAIRIE AND WIBAUX COUNTIES.

THE TORNADO WATCH IS IN EFFECT UNTIL 10 PM MDT.

FRANSEN

Special weather statement, Jun 9, 3:15 PM MDT, 25 minutes before

MTZ016>027-059>062-092130-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
315 PM MDT SAT JUN 9 2001

...SIGNIFICANT UPDATES TO SEVERE WEATHER WATCHES IN EASTERN
MONTANA...

SEVERE THUNDERSTORM WATCH NUMBER 382 HAS BEEN CANCELLED IN THE
FOLLOWING COUNTIES:
PETROLEUM...GARFIELD...PHILLIPS...VALLEY...DANIELS...SHERIDAN AND
ROOSEVELT

TORNADO WATCH NUMBER 384 HAS REPLACED SEVERE THUNDERSTORM WATCH
NUMBER 384= IN THE FOLLOWING COUNTIES:

MCCONE...RICHLAND...DAWSON...PRAIRIE AND WIBAUX COUNTIES.

THE TORNADO WATCH IS IN EFFECT UNTIL 10 PM MDT.

FRANSEN

The office that day

Everything else NWS Glasgow, MT issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 9, 9:12 AM MDT	Severe Thunderstorm Warning	GGW	Garfield	63 min
Jun 9, 10:27 AM MDT	Severe Thunderstorm Warning	GGW	Garfield, McCone	63 min
Jun 9, 10:28 AM MDT	Severe Thunderstorm Warning	GGW	Phillips	62 min
Jun 9, 11:24 AM MDT	Severe Thunderstorm Warning	GGW	Dawson	66 min
Jun 9, 11:29 AM MDT	Severe Thunderstorm Warning	GGW	Phillips, Valley	61 min
Jun 9, 12:28 PM MDT	Severe Thunderstorm Warning	GGW	Garfield, Valley	62 min
Jun 9, 1:53 PM MDT	Severe Thunderstorm Warning	GGW	Sheridan	37 min
Jun 9, 2:39 PM MDT	Severe Thunderstorm Warning	GGW	Dawson, McCone	36 min

Nearby

Severe Thunderstorm Warnings in Montana, 2001 Every 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.