Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 16, NWS Missoula, MT

August 24, 2000Lincoln County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Aug 24, 2000, 7:06 PM MDT for Lincoln County, Montana. It was in force for 39 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: Aug 24, 2000, 7:06 PM MDT (01:06 UTC)
Expired: Aug 24, 2000, 7:45 PM MDT
In force: 39 min
Issued by: NWS Missoula, MT
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Lincoln County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 00:00Z, 1.1 hours before the alert went out and 98 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: 1104 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 2715 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KMSO 250109
SVRMSO
MTC053-250145-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
706 PM MDT THU AUG 24 2000

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL LINCOLN COUNTY IN NORTHWEST MONTANA

* UNTIL 745 PM MDT

* AT 706 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 11 MILES
  SOUTHWEST OF LIBBY...MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
  NEAR LIBBY AT 725 PM MDT

DAMAGING WINDS IN EXCESS OF 55 MPH ARE LIKELY WITH THIS SEVERE
THUNDERSTORM. LARGE HAIL IS POSSIBLE...ALONG WITH FREQUENT LIGHTNING
AND HEAVY RAIN. FOR YOUR PROTECTION...GO INDOORS AND STAY AWAY FROM
WINDOWS. IF YOU ARE CAUGHT OUTSIDE...MOVE TO A WELL PROTECTED AREA.


LAT...LON 4833 11590 4821 11571 4851 11518 4868 11544

SULLIVAN

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 Missoula, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 24, 2:05 PM MDT, 5 hours 1 minute earlier.

Area forecast discussion, Aug 24, 2:05 PM MDT, 5 hours 1 minute before

WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
205 PM MDT THU AUG 24 2000

VORT MAX AND ASSOCIATED WEAK UPPER LEVEL TROUGH MOVE EAST OF THE AREA
BY EARLY EVENING. ADDITIONAL ACTIVITY DEVELOPING SOUTH OF MAIN AREA
OF SHOWERS/THUNDERSTORMS IN WEST CENTRAL MONTANA. THIS IS WHERE THE
STRONGEST DYNAMICS LIE NEAR 70 KNOT JET...BUT THIS ACTIVITY WILL BE
MOSTLY EAST OF AREA BY 00Z. THUS ONLY EXPECT SLIGHT CHANCE POPS FOR
ANY LINGERING ACTIVITY IN WESTERN MONTANA AND LEMHI COUNTY EARLY THIS
EVENING. AREA COMES UNDER THE INFLUENCE OF WESTERLY FLOW FOR FRIDAY
...WHICH THEN BECOMES SOUTHWEST BY LATE DAY AS A TROUGH MOVES ONTO
THE WEST COAST. SURFACE TROUGH MOVES THROUGH THE AREA EARLY IN THE
DAY SATURDAY...SETTING AREA UP FOR BREEZY WINDS BY LATE AFTERNOON AS
COLD AIR SETTLES INTO THE AREA. A COLD FRONT ASSOCIATED WITH THE
UPPER TROUGH MOVES EASTWARD INTO ALBERTA...BUT TAIL END HANGS ALONG
THE CANADIAN BORDER. THIS SYSTEM WILL BE DRY FOR OUR AREA WITH ONLY
WINDS AND COOLER TEMPERATURES EXPECTED. SUBTROPICAL MOISTURE RETURNS
TO OUR EXTREME SOUTH BY LATE SATURDAY AFTERNOON. ATMOSPHERE ALSO
BECOMES MARGINALLY UNSTABLE. SINCE MOISTURE IS HIGH BASED AND LIMITED
ONLY EXPECT A SLIGHT CHANCE OF THUNDERSTORMS IN LEMHI COUNTY AT THIS
TIME. BELTZ

RED FLAG WARNING HAS BEEN CANCELLED FOR ALL FIRE WEATHER ZONES.

EXTENDED...MEDIUM RANGE MODELS IN REASONABLE AGREEMENT TODAY WITH
TROF OVER NRN ROCKIES ON SUNDAY. THEN RIDGE REBUILDING WITH FLAT
WESTERLY FLOW OVER THE AREA MONDAY. MODELS DO DIVERGE ON TUESDAY WITH
UPSTREAM FLOW MORE SOUTHERLY ON UK...SOUTHWEST ON EUROPEAN AND
SOUTHEAST ON ETA. THIS COULD IMPACT ACCESS TO SUBTROPICAL MOISTURE
AND RESULTANT THUNDERSTORMS. WILL KEEP FORECAST DRY FOR NOW EXCPET
FOR SLIGHT CHANCE SUNDAY IN THE NORTH. TEMPS WILL SHOW WARMING TREND
FROM SUNDAY TO TUESDAY. HOADLEY

In the hours before

Local storm report, Aug 24, 3:00 PM MDT, 4 hours 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MISSOULA MT
300 PM MDT THU AUG 24 2000

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

0807 AM    HUNTZ GULCH               ID    63 MPH WIND GUST
08/24/00   IDAHO COUNTY                    REPORT FROM RAWS
                                           STATION

0840 AM    BURNT FLAT                ID    60 MPH WIND GUST
08/24/00   IDAHO COUNTY                    THUNDERSTORM WINDS
                                           SNAPPED TREE BRANCHES
                                           AND BLEW DOWN TENTS AT
                                           FIRE CAMP NEAR WHITEBIRD

0850 AM    OREGON/BUTTE              ID    WIND DAMAGE
08/24/00   IDAHO COUNTY                    WINDS ESTIMATED AT
                                           GREATER THAN 50 MPH
                                           DOWNED TREES WHICH KILLED
                                           A MULE NEAR THE SALMON
                                           RIVER
END

Nearby

Severe Thunderstorm Warnings in Montana, 2000 Every 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.