Alert archive / Montana / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 2, NWS Missoula, MT

June 8, 2016Flathead County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 8, 2016, 4:42 PM MDT for Flathead County, Montana. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jun 8, 2016, 4:42 PM MDT (22:42 UTC)
Expired
Jun 8, 2016, 5:15 PM MDT
In force
33 min
Issued by
NWS Missoula, MT
Area
Storm-based polygon

County Flathead County, MT

The radar

The Missoula radar (KMSX), 165 km from the middle of the area, began a volume at 22:41 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 watch it was issued in

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

IssuedProductOfficeLasted
Jun 8, 3:07 PM MDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 10.7 hours before the alert went out and 226 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-pSkew-T log-p diagram, Spokane, WA at 12:00Z on 2016-06-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 20 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2016-06-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
20 J/kg
Mixed-layer CIN
-336 J/kg
Mixed-layer LCL
2709 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
117 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

155 
WUUS55 KMSO 082242
SVRMSO
MTC029-082315-
/O.NEW.KMSO.SV.W.0002.160608T2242Z-160608T2315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
442 PM MDT WED JUN 8 2016

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL FLATHEAD COUNTY IN NORTHWESTERN MONTANA...

* UNTIL 515 PM MDT

* AT 441 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR
  WEST GLACIER...OR 22 MILES NORTHEAST OF EVERGREEN...AND MOVING EAST
  AT 40 MPH.

* TRAINED SPOTTERS HAVE REPORTED A HISTORY OF NICKEL SIZE HAIL WITH
  THIS STORM.

* LOCATIONS IMPACTED INCLUDE...
  GLACIER NATIONAL PARK...WEST GLACIER...MARTIN CITY...CORAM...
  NYACK AND HUNGRY HORSE. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR
PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS!

&&

LAT...LON 4858 11361 4858 11354 4855 11350 4855 11347
      4847 11347 4846 11348 4842 11341 4842 11336
      4840 11335 4831 11407 4847 11415 4859 11368
      4859 11366 4860 11363
TIME...MOT...LOC 2241Z 250DEG 41KT 4843 11388 

$$
2 follow-up statements
100 
WWUS55 KMSO 082300
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
500 PM MDT WED JUN 8 2016

MTC029-082315-
/O.CON.KMSO.SV.W.0002.000000T0000Z-160608T2315Z/
FLATHEAD MT-
500 PM MDT WED JUN 8 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM MDT
FOR NORTHEASTERN FLATHEAD COUNTY...

AT 500 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 12
MILES WEST OF KIOWA...OR 37 MILES NORTHEAST OF EVERGREEN...MOVING
EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
NYACK...GLACIER NATIONAL PARK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE
HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION
MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR
BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS
WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4858 11361 4858 11354 4855 11350 4855 11347
      4847 11347 4846 11348 4842 11341 4842 11336
      4840 11335 4841 11391 4852 11394 4859 11368
      4859 11366 4860 11363
TIME...MOT...LOC 2300Z 250DEG 41KT 4850 11357 

$$
459 
WWUS55 KMSO 082309
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
509 PM MDT WED JUN 8 2016

MTC029-082318-
/O.EXP.KMSO.SV.W.0002.000000T0000Z-160608T2315Z/
FLATHEAD MT-
509 PM MDT WED JUN 8 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN FLATHEAD COUNTY
WILL EXPIRE AT 515 PM MDT...
    
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA AND WEAKENED. THEREFORE THE WARNING WILL BE ALLOWED
TO EXPIRE.

LAT...LON 4858 11361 4858 11354 4855 11350 4855 11347
      4847 11347 4846 11348 4842 11341 4842 11336
      4840 11335 4841 11391 4852 11394 4859 11368
      4859 11366 4860 11363
TIME...MOT...LOC 2305Z 250DEG 41KT 4850 11357 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 7, 6:37 PM MDTSpecial Weather StatementMSOMineral23 min
Jun 7, 7:03 PM MDTSpecial Weather StatementMSOMineral27 min
Jun 8, 3:49 PM MDTSpecial Weather StatementMSOGranite41 min
Jun 8, 4:00 PM MDTSpecial Weather StatementMSOFlathead30 min
Jun 8, 4:19 PM MDTSpecial Weather StatementMSOMissoula26 min
Jun 8, 4:28 PM MDTSpecial Weather StatementMSOPowell32 min
Jun 8, 4:31 PM MDTSpecial Weather StatementMSOFlathead44 min
Jun 8, 4:52 PM MDTSevere Thunderstorm WarningMSOMineral, Sanders23 min
Jun 8, 4:57 PM MDTSevere Thunderstorm WarningMSOMineral, Sanders33 min
Jun 8, 4:59 PM MDTSpecial Weather StatementMSOMissoula31 min
Jun 8, 5:06 PM MDTSpecial Weather StatementMSOFlathead39 min
Jun 8, 5:14 PM MDTSpecial Weather StatementMSOSanders31 min
Jun 8, 5:22 PM MDTSpecial Weather StatementMSOLake23 min
Jun 8, 5:33 PM MDTSpecial Weather StatementMSOSanders27 min
Jun 8, 5:34 PM MDTSpecial Weather StatementMSOFlathead26 min
Jun 8, 5:52 PM MDTSpecial Weather StatementMSOFlathead23 min

Nearby

Severe Thunderstorm Warnings in Montana, 2016Every severe thunderstorm warning in 2016

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.