Alert archive / Montana / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 28, NWS Missoula, MT

June 26, 2012Flathead County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 26, 2012, 6:25 AM MDT for Flathead 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 as issued.

The facts

Issued
Jun 26, 2012, 6:25 AM MDT (12:25 UTC)
Expired
Jun 26, 2012, 7:00 AM MDT
In force
35 min
Issued by
NWS Missoula, MT
Area
Storm-based polygon

County Flathead County, MT

The radar

The Missoula radar (KMSX), 163 km from the middle of the area, began a volume at 12:27 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 nearest sounding before it

Spokane, WA (KOTX), launched 12:00Z, 0.4 hours before the alert went out and 203 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 2012-06-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 29 joules per kilogram.LCLEL10008507005003002001001 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 2012-06-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -3 square meters per square second.1939587897Sfc1 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
29 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1214 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-3 m²/s²
0-3 km storm-relative helicity
159 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.

186 
WUUS55 KMSO 261225
SVRMSO
MTC029-261300-
/O.NEW.KMSO.SV.W.0028.120626T1225Z-120626T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MISSOULA MT
625 AM MDT TUE JUN 26 2012

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

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

* UNTIL 700 AM MDT.

* AT 619 AM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING ONE INCH HAIL...AND DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THIS STORM WAS LOCATED 10 MILES SOUTHEAST OF COLUMBIA
  FALLS...OR ABOUT 11 MILES EAST OF EVERGREEN...AND WAS MOVING NORTH
  AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...APGAR...COLUMBIA FALLS...CORAM...
  HUNGRY HORSE...LAKE MCDONALD...MARTIN CITY...NYACK AND WEST
  GLACIER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 4869 11373 4820 11386 4823 11422 4873 11423
TIME...MOT...LOC 1225Z 185DEG 34KT 4832 11403

$$
1 follow-up statement
107 
WWUS55 KMSO 261254
SVSMSO

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
654 AM MDT TUE JUN 26 2012

MTC029-261304-
/O.EXP.KMSO.SV.W.0028.000000T0000Z-120626T1300Z/
FLATHEAD MT-
654 AM MDT TUE JUN 26 2012

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL FLATHEAD COUNTY
EXPIRES AT 700 AM MDT...

LAT...LON 4869 11373 4820 11386 4823 11422 4873 11423
TIME...MOT...LOC 1254Z 185DEG 34KT 4859 11399

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 26, 2:16 AM MDTSpecial Weather StatementMSOMissoula44 min
Jun 26, 2:35 AM MDTRed Flag WarningMSOBeaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more21 hr
Jun 26, 2:54 AM MDTSpecial Weather StatementMSOFlathead36 min
Jun 26, 3:59 AM MDTSpecial Weather StatementMSOFlathead31 min
Jun 26, 4:24 AM MDTSpecial Weather StatementMSOFlathead36 min
Jun 26, 5:02 AM MDTSpecial Weather StatementMSOSanders28 min
Jun 26, 5:15 AM MDTSpecial Weather StatementMSOFlathead30 min
Jun 26, 5:41 AM MDTSevere Thunderstorm WarningMSOFlathead, Lake34 min
Jun 26, 6:00 AM MDTSevere Thunderstorm WarningMSOFlathead, Lake30 min
Jun 26, 6:38 AM MDTSevere Thunderstorm WarningMSOFlathead, Lincoln, Sanders52 min
Jun 26, 6:53 AM MDTSevere Thunderstorm WarningMSOFlathead37 min
Jun 26, 8:50 AM MDTLake Wind AdvisoryMSOFlathead, Lake, Sanders9 hr
Jun 26, 10:07 AM MDTAreal Flood AdvisoryMSOLake9 hr
Jun 26, 10:08 AM MDTSpecial Weather StatementMSOFlathead, Lake52 min
Jun 26, 10:11 AM MDTSpecial Weather StatementMSOGranite, Missoula49 min
Jun 26, 10:25 AM MDTSevere Thunderstorm WarningMSOFlathead, Lake, Missoula50 min
Jun 26, 11:09 AM MDTSevere Thunderstorm WarningMSOFlathead, Missoula, Powell35 min
Jun 26, 11:11 AM MDTFlash Flood WarningMSOFlathead3 hr
Jun 26, 1:16 PM MDTAreal Flood WarningMSOFlathead24 hr

Nearby

Severe Thunderstorm Warnings in Montana, 2012Every severe thunderstorm warning in 2012

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.