Alert archive / Montana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 8, NWS Missoula, MT

June 27, 2001Missoula County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 27, 2001, 2:34 PM MDT for Missoula County, Montana. It was in force for 41 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 27, 2001, 2:34 PM MDT (20:34 UTC)
Expired: Jun 27, 2001, 3:15 PM MDT
In force: 41 min
Issued by: NWS Missoula, MT
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Missoula County, MT

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 8.6 hours before the alert went out and 205 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1034 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 158 m²/s²
0-3 km storm-relative helicity: 205 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 272033
SVRMSO

MTC063-272115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
234 PM MDT WED JUN 27 2001

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  MISSOULA COUNTY IN WEST CENTRAL MONTANA

* UNTIL 315 PM MDT

* AT 231 PM MDT...RADAR INDICATED A SEVERE THUNDERSTORM 8 MILES
  SOUTHWEST OF LOLO...OR 16 MILES SOUTHWEST OF MISSOULA...MOVING
  NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE...
   OVER LOLO AT 240 PM MDT
   OVER MISSOULA AT 250 PM MDT   
   OVER BONNER AT 255 PM MDT

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS AND HAIL...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 4674 11432 4661 11415 4700 11344 4718 11369

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 Jun 27, 1:55 PM MDT, 39 minutes earlier.

Area forecast discussion, Jun 27, 1:55 PM MDT, 39 minutes before

WESTERN MONTANA AND NORTH CENTRAL IDAHO FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MISSOULA MT
155 PM MDT WED JUN 27 2001

.SHORT TERM...300MB JET AND SHORTWAVE TO PROVIDE UPPER SUPPORT FOR
SHOWERS AND THUNDERSTORMS THROUGH THIS EVENING. HIGHER PRECIPITABLE
WATER VALUES IN THE 1 TO 1.5 INCH RANGE COULD RESULT IN SOME LOCAL
DOWNPOURS THE NEXT SEVERAL HOURS. CONSEQUENTLY...HAVE ISSUED FLASH
FLOOD WATCH FOR BURNED AREAS IN SOUTHERN RAVALLI COUNTY THROUGH THIS
EVENING. BEST CAPES CONTINUE ABOVE 1000 J/KG TONIGHT WITH DECENT
SHEAR...SO THUNDERSTORM ACTIVITY TO PERSIST INTO THE OVERNIGHT HOURS.
FLOW FLATTENS OUT TOMORROW AS LONGWAVE RIDGE BEGINS TO RETROGRADE.
CONTINUED SHORTWAVE ENERGY TO KEEP ISOLATED TO SCATTERED SHOWERS AND
A FEW AFTERNOON AND EVENING THUNDERSTORMS THURSDAY AND THURSDAY
NIGHT. FOUR-CORNERS HIGH BUILDS ENOUGH BY FRIDAY TO DRY THINGS OUT
OVER THE FORECAST AREA. SIGLER

.EXTENDED...AVN STILL SHOWS A TROUGH MOVING THROUGH THE RIDGE ON
SUNDAY SO WILL LEAVE IN SLIGHT CHANCE WORDING THEN. FOUR CORNERS
HIGH BUILDS STRONGLY INTO THE NORTHERN ROCKIES NEXT WEEK AS THE MEAN
TROUGH POSITION RETROGRADES WESTWARD ACROSS THE EASTERN PAC. WILL
EASILY SEE A WARMING TREND WITH TEMPS BACK INTO THE 90S BY DAYS 6/7.
MRF SHOWS GOOD INSTABILITY BY DAY7 WITH INCREASED RH BUT WILL HOLD
OFF ON ANY CONVECTION SINCE MOISTURE WILL PROBABLY BE LACKING.
BOLDT

.MSO...FLASH FLOOD WATCH SOUTHERN RAVALLI COUNTY TIL 05Z THIS
       EVENING.

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.