Alert archive / Montana / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 71, NWS Billings, MT

June 22, 2005Musselshell County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 22, 2005, 5:47 PM MDT for Musselshell 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 counties it named.

The facts

Issued: Jun 22, 2005, 5:47 PM MDT (23:47 UTC)
Expired: Jun 22, 2005, 6:28 PM MDT
In force: 41 min
Issued by: NWS Billings, MT
Area: Counties, with a storm outline in the text

County Musselshell County, MT

The radar

The Billings radar (KBLX), 73 km from the middle of the area, began a volume at 23:49 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.

Issued	Product	Office	Lasted
Jun 22, 3:50 PM MDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Great_falls, MT (KTFX), launched 12:00Z, 11.8 hours before the alert went out and 198 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: 2428 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 74 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 22, 4:04 PM MDT, 1 hour 43 minutes earlier.

Area forecast discussion, Jun 22, 4:04 PM MDT, 1 hour 43 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
404 PM MDT WED JUN 22 2005

.SHORT TERM...VALID FOR THU AND FRI...
WIDELY SCATTERED CONVECTION HAD DEVELOPED OVER HIGH TERRAIN OF WY
AND WAS MOVING NE INTO FORECAST AREA THIS AFTERNOON. TWO
SHORTWAVES WILL AFFECT THE AREA TONIGHT. ONE WILL MOVE OUT OF ID
INTO THE AREA BY 03Z AND THE OTHER WAVE WILL MOVE NORTH INTO THE
AREA FROM SW UT BY 06Z. WENT WITH NAM12 FOR FORECAST AS IT HAD
GOOD HANDLE ON TRACK OF WAVES THIS AFTERNOON. INVERTED V SOUNDING
PROFILES WILL SUPPORT STRONG WINDS WITH ANY THUNDERSTORMS. CAPES
PROGGED BELOW 1000 J/KG TONIGHT BUT 50 KT MID LEVEL JET OVER W
ZONES SUPPORTED SOME THUNDERSTORMS BECOMING SEVERE.

COLD FRONT OVER NW MT WAS BETTER DELINEATED THIS MORNING THAN IT
WAS THIS AFTERNOON AS STRONG DAYTIME HEATING HAS MODIFIED LOW
LEVEL AIRMASS. NAM12 HAD FRONT SINKING SOUTH INTO AREA AFTER 06Z
AND CONTINUING TO MOVE SOUTH ON THU. FRONT PROGGED TO LIFT NE AS A
WARM FRONT ON FRI. POST-FRONTAL MOISTURE WILL SUPPORT 20-30
PERCENT POPS OVER REGION THROUGH THE PERIOD AND SOUNDINGS SHOWED
SEVERAL HUNDRED JOULES/KG OF CAPE. PREVIOUS FORECAST HAD GOOD
HANDLE ON SITUATION...SO MADE VERY FEW CHANGES. TEMPS ALSO IN GOOD
SHAPE AND WILL BE MUCH LOWER THAN THEY WERE TODAY.

WATER LEVELS OVER SHERIDAN FOOTHILLS HAVE COME DOWN SO HAVE ENDED
SMALL STREAM FLOOD ADVISORY. ARTHUR

.LONG TERM...VALID FOR SAT...SUN...MON...TUE...WED...
THE MEDIUM RANGE MODELS RETURN TO A SOUTHWEST UPPER LEVEL FLOW
PATTERN OVER MONTANA THIS WEEKEND. THE LATEST GFS MODEL INDICATES
A BRIEF BREAK IN THE SOUTHWEST FLOW WITH THE SOUTHERN END OF AN
UPPER LEVEL TROUGH PASSING THROUGH MONDAY/MONDAY NIGHT...NORTHWEST
UPPER FLOW TUESDAY...AND A RETURN TO UPPER LEVEL RIDGING AND
SOUTHWEST UPPER FLOW BY WEDNESDAY. THE PREVIOUS FORECAST PACKAGE
HAS THIS HANDLED WELL WITH A GENERAL BROAD BRUSH OF BOTH DAY AND
NIGHT SLIGHT CHANCES FOR THUNDERSTORMS...WITHOUT TRYING TO
PINPOINT THE EXACT PASSAGE OF SHORT-WAVE DISTURBANCES IN THE UPPER
LEVEL FLOW. THE MAIN CHANGE MADE TO THE FORECAST WAS TO RAISE
TEMPERATURES THROUGH THE PERIOD IN THE HIGHER ELEVATIONS AS
PREVIOUS FORECAST PACKAGE REMAINED WELL BELOW NORMAL VALUES AND
EXPECT THAT THESE AREAS WILL SEE ABOVE NORMAL TEMPERATURES.
CARPENTER

&&

.AVIATION...

VFR CONDITIONS CONTINUE TO BE EXPECTED ACROSS MUCH OF THE AREA
THIS EVENING...BUT CONVECTION HAS BEGUN TO PRODUCE LIGHTNING
ACTIVITY OVER THE HIGHER TERRAIN OF THE BEARTOOTH/ABSAROKA
MOUNTAINS AND NEAR BUTTE. ISOLATED MVFR CONDITIONS WILL REMAIN POSSIBLE
NEAR THUNDERSTORMS FORMING ALONG AN APPROACHING COLD FRONT ALIGNED
BETWEEN LWT AND BTM THIS EVENING. CARPENTER

&&

.PRELIMINARY POINT TEMP/POPS...

    THU     FRI     SAT     SUN     MON     TUE     WED
-----------------------------------------------------------
BIL 062/084 054/079 055/086 057/085 056/084 055/081 058/080
    22/T    30/B    22/T    22/T    22/T    22/T    22/T
LVM 050/080 047/078 046/085 049/081 048/079 048/080 050/081
    22/T    32/T    22/T    22/T    22/T    22/T    22/T
HDN 066/084 056/081 055/087 057/086 058/086 055/083 057/082
    22/T    31/B    22/T    22/T    22/T    22/T    22/T
MLS 067/083 055/081 056/088 060/089 057/088 058/085 059/083
    21/B    20/B    22/T    22/T    22/T    22/T    22/T
4BQ 069/084 056/080 055/086 057/087 058/088 057/085 058/082
    22/T    32/T    22/T    22/T    22/T    22/T    22/T
BHK 065/082 051/080 054/084 056/084 055/084 056/081 057/079
    21/N    20/B    22/T    22/T    22/T    22/T    22/T
SHR 061/084 053/078 051/087 052/087 051/086 051/083 053/082
    22/T    32/T    22/T    22/T    22/T    22/T    22/T

&&

.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...SEVERE THUNDERSTORM WATCH 512 IN EFFECT UNTIL 11 PM MDT THIS
      EVENING FOR ZONES 28>31-34-35-38>42-56>58-63>68.
WY...NONE.

&&

WEATHER.GOV/BILLINGS

Hazardous weather outlook, Jun 22, 5:09 AM MDT, 12 hours 38 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
509 AM MDT WED JUN 22 2005

MTZ028>042-056>058-063>068-WYZ098-231115-
SOUTHERN WHEATLAND-MUSSELSHELL-TREASURE-NORTHERN ROSEBUD-CUSTER-
FALLON-NORTHERN STILLWATER-YELLOWSTONE-POWDER RIVER-CARTER-
SOUTHERN BIG HORN-EASTERN CARBON-NORTHERN PARK-
NORTHERN SWEET GRASS-GOLDEN VALLEY-RED LODGE FOOTHILLS-
NORTHERN BIG HORN-SOUTHERN ROSEBUD-JUDITH GAP-PARADISE VALLEY-
LIVINGSTON AREA-BEARTOOTH FOOTHILLS-ABSAROKA/BEARTOOTH MOUNTAINS-
CRAZY MOUNTAINS-NORTHEAST BIG HORN MOUNTAINS-
509 AM MDT WED JUN 22 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
WYOMING...SOUTHEAST MONTANA...SOUTH CENTRAL MONTANA AND CENTRAL
MONTANA.

.DAY ONE...TODAY AND TONIGHT
THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS ACROSS THE AREA THIS
AFTERNOON. GUSTY WINDS WILL BE THE MAIN THREAT FROM ANY
THUNDERSTORMS THAT DO DEVELOP.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

WYZ099-231115-
SHERIDAN FOOTHILLS-
509 AM MDT WED JUN 22 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTH CENTRAL
WYOMING.

.DAY ONE...TODAY AND TONIGHT
THERE IS A SLIGHT CHANCE FOR THUNDERSTORMS ACROSS THE AREA THIS
AFTERNOON. GUSTY WINDS WILL BE THE MAIN THREAT FROM ANY
THUNDERSTORMS THAT DO DEVELOP.

A SMALL STREAM ADVISORY IS IN EFFECT FOR THE FOOTHILLS OF THE BIG
HORN MOUNTAINS IN SHERIDAN COUNTY. PLEASE REFER TO GTFFLSBYZ FOR
DETAILS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY
A SMALL STREAM ADVISORY IS IN EFFECT THROUGH THURSDAY AFTERNOON FOR
THE FOOTHILLS OF THE BIG HORN MOUNTAINS IN SHERIDAN COUNTY. PLEASE
REFER TO GTFFLSBYZ FOR DETAILS.

NO HAZARDOUS WEATHER EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

In the hours before

Local storm report, Jun 22, 2:04 PM MDT, 3 hours 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
204 PM MDT WED JUN 22 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0535 PM     TSTM WND GST     5 SW BRIDGER            45.24N 108.99W
06/21/2005  65 MPH           CARBON             MT   TRAINED SPOTTER

            ROOFING MATERIAL RIPPED OFF HOUSE

0540 PM     TSTM WND GST     2 NE BRIDGER            45.31N 108.89W
06/21/2005  60 MPH           CARBON             MT   TRAINED SPOTTER

            2 INCH TREE BRANCHES DOWN

0550 PM     TSTM WND GST     12 NW ACTON             46.06N 108.86W
06/21/2005  65 MPH           YELLOWSTONE        MT   TRAINED SPOTTER

0550 PM     TSTM WND GST     9 WNW ACTON             45.98N 108.86W
06/21/2005  70 MPH           YELLOWSTONE        MT   TRAINED SPOTTER

&&

SOLUM

Local storm report, Jun 22, 2:05 PM MDT, 3 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE BILLINGS MT
205 PM MDT WED JUN 22 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0440 PM     TSTM WND GST     2 S NYE                 45.42N 109.82W
06/21/2005  60 MPH           STILLWATER         MT   MESONET

0445 PM     TSTM WND GST     NYE                     45.45N 109.82W
06/21/2005  58 MPH           STILLWATER         MT   CO-OP OBSERVER

0510 PM     TSTM WND DMG     ABSAROKEE               45.52N 109.44W
06/21/2005                   STILLWATER         MT   TRAINED SPOTTER

            UPROOTED EVERGREEN TREE AND AWNING BLOWN OFF HOUSE

0530 PM     TSTM WND GST     RAPELJE                 45.97N 109.27W
06/21/2005  58 MPH           STILLWATER         MT   TRAINED SPOTTER

0535 PM     TSTM WND GST     5 SW BRIDGER            45.24N 108.99W
06/21/2005  65 MPH           CARBON             MT   TRAINED SPOTTER

            ROOFING MATERIAL RIPPED OFF HOUSE

0540 PM     TSTM WND GST     2 NE BRIDGER            45.31N 108.89W
06/21/2005  60 MPH           CARBON             MT   TRAINED SPOTTER

            2 INCH TREE BRANCHES DOWN

0550 PM     TSTM WND GST     12 NW ACTON             46.06N 108.86W
06/21/2005  65 MPH           YELLOWSTONE        MT   TRAINED SPOTTER

0550 PM     TSTM WND GST     9 WNW ACTON             45.98N 108.86W
06/21/2005  70 MPH           YELLOWSTONE        MT   TRAINED SPOTTER

0555 PM     TSTM WND GST     BILLINGS                45.79N 108.54W
06/21/2005  65 MPH           YELLOWSTONE        MT   NWS EMPLOYEE

0600 PM     TSTM WND GST     25 NE RAPELJE           46.22N 108.90W
06/21/2005  60 MPH           GOLDEN VALLEY      MT   TRAINED SPOTTER

0650 PM     TSTM WND GST     10 N ROUNDUP            46.59N 108.54W
06/21/2005  60 MPH           MUSSELSHELL        MT   TRAINED SPOTTER

0745 PM     HAIL             7 SE MELSTONE           46.53N 107.76W
06/21/2005  0.75 INCH        ROSEBUD            MT   TRAINED SPOTTER

0755 PM     HAIL             10 S SUMATRA            46.47N 107.55W
06/21/2005  0.75 INCH        TREASURE           MT   TRAINED SPOTTER

&&

SOLUM

Local storm report, Jun 22, 4:45 PM MDT, 1 hour 2 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 6:14 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Musselshell	62 min
Jun 21, 7:31 PM MDT	Severe Thunderstorm Warning	BYZ	Musselshell, Rosebud, Treasure	59 min
Jun 22, 4:00 PM MDT	Severe Thunderstorm Warning	BYZ	Golden Valley, Musselshell	54 min
Jun 22, 4:20 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon	25 min

Nearby

Severe Thunderstorm Warnings in Montana, 2005 Every severe thunderstorm warning in 2005

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.