Alert archive / Montana / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 9, NWS Missoula, MT

June 8, 2016Lake County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jun 8, 2016, 6:44 PM MDT for Lake County, Montana. It was in force for 28 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, 6:44 PM MDT (00:44 UTC)
Expired
Jun 8, 2016, 7:12 PM MDT
In force
28 min
Issued by
NWS Missoula, MT
Area
Storm-based polygon

County Lake County, MT

The radar

The Missoula radar (KMSX), 55 km from the middle of the area, began a volume at 00:42 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 00:00Z, 0.7 hours before the alert went out and 172 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 00:00Z on 2016-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 00:00Z on 2016-06-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -60 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2391 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
-60 m²/s²
0-3 km storm-relative helicity
200 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

867 
WUUS55 KMSO 090044
SVRMSO
MTC047-090130-
/O.NEW.KMSO.SV.W.0009.160609T0044Z-160609T0130Z/

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

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A

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

* UNTIL 730 PM MDT

* AT 643 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
  CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED
  NEAR OLD AGENCY...OR 20 MILES SOUTH OF POLSON. THIS STORM WAS
  MOVING NORTH - NORTHEAST AT 20 MILES AN HOUR.

* LOCATIONS IMPACTED INCLUDE...
  POLSON...RONAN...JETTE...PABLO...KERR...TURTLE LAKE...
  FINLEY POINT...FORT CONNAH...ALLENTOWN...KICKING HORSE...
  CHARLO AND ROUND BUTTE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE THUNDERSTORMS PRODUCE...DESTRUCTIVE HAIL...DEADLY LIGHTNING
AND VERY HEAVY RAIN. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

LAT...LON 4738 11400 4740 11430 4750 11426 4762 11428
      4771 11425 4779 11388 4747 11397
TIME...MOT...LOC 0043Z 180DEG 0KT 4739 11422 

$$
2 follow-up statements
695 
WWUS55 KMSO 090110
SVSMSO

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

MTC047-090130-
/O.CON.KMSO.SV.W.0009.000000T0000Z-160609T0130Z/
LAKE MT-
710 PM MDT WED JUN 8 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM MDT
FOR CENTRAL LAKE COUNTY...

AT 709 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING STRONG WINDS TO 45 MPH AND QUARTER SIZE HAIL.
THIS STORM WAS LOCATED NEAR OLD AGENCY...OR 21 MILES SOUTH OF
POLSON. THIS STORM WAS NEARLY STATIONARY.

LOCATIONS IMPACTED INCLUDE...
POLSON...RONAN...JETTE...PABLO...KERR...TURTLE LAKE...FINLEY POINT...
FORT CONNAH...ALLENTOWN...KICKING HORSE...CHARLO AND ROUND BUTTE.

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 4738 11400 4740 11430 4750 11426 4762 11428
      4771 11425 4779 11388 4747 11397
TIME...MOT...LOC 0109Z 180DEG 0KT 4739 11422 

$$
692 
WWUS55 KMSO 090112
SVSMSO

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

MTC047-090121-
/O.CAN.KMSO.SV.W.0009.000000T0000Z-160609T0130Z/
LAKE MT-
712 PM MDT WED JUN 8 2016

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL LAKE COUNTY IS
CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

LAT...LON 4738 11400 4740 11430 4750 11426 4762 11428
      4771 11425 4779 11388 4747 11397
TIME...MOT...LOC 0106Z 180DEG 0KT 4739 11422 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 6:06 PM MDTSevere Thunderstorm WarningMSOFlathead24 min
Jun 8, 6:07 PM MDTSpecial Weather StatementMSO38 min
Jun 8, 6:11 PM MDTSpecial Weather StatementMSOLake64 min
Jun 8, 6:16 PM MDTSevere Thunderstorm WarningMSOFlathead29 min
Jun 8, 6:22 PM MDTSevere Thunderstorm WarningMSOLake, Sanders24 min
Jun 8, 6:26 PM MDTSpecial Weather StatementMSOMineral34 min
Jun 8, 6:31 PM MDTSpecial Weather StatementMSOFlathead29 min
Jun 8, 6:37 PM MDTSevere Thunderstorm WarningMSOMineral, Missoula, Sanders38 min
Jun 8, 7:12 PM MDTSpecial Weather StatementMSOFlathead33 min
Jun 8, 8:41 PM MDTSpecial Weather StatementMSOGranite, Silver Bow64 min
Jun 8, 9:05 PM MDTSpecial Weather StatementMSORavalli40 min
Jun 8, 9:12 PM MDTSevere Thunderstorm WarningMSODeer Lodge, Granite, Powell, Silver Bow33 min
Jun 8, 9:39 PM MDTSpecial Weather StatementMSOMissoula66 min
Jun 8, 9:47 PM MDTSpecial Weather StatementMSOPowell43 min
Jun 9, 3:20 PM MDTSpecial Weather StatementMSODeer Lodge40 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.