Alert archive / Montana / Special Weather Statements in 2011

Special Weather Statement, NWS Billings, MT

June 7, 2011Big Horn County, Montana

NWS Billings, MT issued this special weather statement at Jun 7, 2011, 1:21 AM MDT for Big Horn County, Montana. It was in force for 24 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 7, 2011, 1:21 AM MDT (07:21 UTC)
Expired
Jun 7, 2011, 1:45 AM MDT
In force
24 min
Issued by
NWS Billings, MT

County Big Horn County, MT

The radar

The Billings radar (KBLX), 69 km from the middle of the area, began a volume at 07:23 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

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 7.4 hours before the alert went out and 291 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, Glasgow Intl Airport, MT at 00:00Z on 2011-06-07Temperature 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°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Glasgow Intl Airport, MT at 00:00Z on 2011-06-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 101 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
2276 m above ground
0-6 km bulk shear
64 kt
0-1 km storm-relative helicity
101 m²/s²
0-3 km storm-relative helicity
357 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jun 6, 9:57 PM MDT, 3 hours 24 minutes earlier.

Area forecast discussion, Jun 6, 9:57 PM MDT, 3 hours 24 minutes before
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Hazardous weather outlook, Jun 6, 3:07 PM MDT, 10 hours 14 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
307 PM MDT MON JUN 6 2011

MTZ028>042-056>058-063>068-WYZ098-099-072115-
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-SHERIDAN FOOTHILLS-
307 PM MDT MON JUN 6 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SOME THUNDERSTORMS ACROSS SOUTH CENTRAL AND SOUTHEAST MONTANA
WILL LIKELY BE SEVERE LATE THIS AFTERNOON AND TONIGHT. LARGE HAIL
IS THE BIGGEST THREAT FROM THESE STORMS...BUT TORNADOES AND
SEVERE WINDS ARE ALSO POSSIBLE. THOSE WORKING OR RECREATING
OUTDOORS SHOULD STAY ALERT AND BE PREPARED FOR SEVERE WEATHER.
CHECK THE LATEST FORECASTS AND WARNINGS FREQUENTLY SINCE THE
WEATHER WILL CHANGE QUICKLY.

RISES ARE EXPECTED TO CONTINUE IN RIVERS AND STREAMS THROUGH
TONIGHT DUE TO THE RECENT WARM TEMPERATURES...ESPECIALLY IN AND
NEAR MOUNTAINS. ADDITIONAL RAINFALL TONIGHT MAY ALSO CAUSE
ADDITIONAL RISES. THOSE LIVING NEAR WATER SHOULD STAY ALERT FOR
RISING WATER AND BE PREPARED TO DEAL WITH FLOODING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

UNSETTLED WEATHER WILL CONTINUE THROUGH THE WEEK WITH
THUNDERSTORMS AND SHOWERS. ADDITIONAL RAINFALL MAY EXACERBATE
FLOODING AND HIGH WATER LEVELS. THOSE LIVING NEAR WATER SHOULD
STAY ALERT FOR RISING WATER AND BE PREPARED TO DEAL WITH
FLOODING.

.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 7, 12:38 AM MDT, 43 minutes before
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Local storm report, Jun 7, 12:50 AM MDT, 31 minutes before
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Local storm report, Jun 7, 12:55 AM MDT, 26 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
1255 AM MDT TUE JUN 07 2011

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

1004 PM     TORNADO          9 N WORDEN              46.10N 108.17W
06/06/2011                   YELLOWSTONE        MT   LAW ENFORCEMENT

            LOCAL LAW ENFORCEMENT REPORTED A TORNADO 9 MILES NORTH OF
            WORDEN

&&

STC
Special weather statement, Jun 7, 12:58 AM MDT, 23 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
1258 AM MDT TUE JUN 7 2011

MTZ038-057-070730-
NORTHERN BIG HORN MT-SOUTHERN BIG HORN MT-
1258 AM MDT TUE JUN 7 2011

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL BIG HORN COUNTY UNTIL 130
AM MDT...

AT 1254 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING
A STRONG THUNDERSTORM 6 MILES NORTHEAST OF FORT SMITH...MOVING
NORTHEAST AT 30 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

THIS STORM WILL BE NEAR...
ST. XAVIER AROUND 110 AM MDT.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4574 10787 4553 10747 4524 10780 4533 10806
TIME...MOT...LOC 0658Z 218DEG 26KT 4541 10784
Local storm report, Jun 7, 1:01 AM MDT, 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
101 AM MDT TUE JUN 07 2011

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

0718 PM     HAIL             ESE BIG TIMBER          45.83N 109.94W
06/06/2011  M2.00 INCH       SWEET GRASS        MT   TRAINED SPOTTER

&&

AARONG
Special weather statement, Jun 7, 1:21 AM MDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
121 AM MDT TUE JUN 7 2011

MTZ038-057-070745-
NORTHERN BIG HORN MT-SOUTHERN BIG HORN MT-
121 AM MDT TUE JUN 7 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN BIG HORN COUNTY UNTIL
145 AM MDT...

AT 118 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 12 MILES SOUTHWEST OF HARDIN...MOVING NORTHEAST
AT 30 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

THIS STORM WILL BE NEAR...
HARDIN AROUND 140 AM MDT.

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4590 10788 4586 10736 4544 10766 4551 10793
TIME...MOT...LOC 0721Z 204DEG 28KT 4560 10771

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 6, 6:33 PM MDTSpecial Weather StatementBYZSweet Grass57 min
Jun 6, 6:50 PM MDTSevere Thunderstorm WarningBYZSweet Grass55 min
Jun 6, 6:55 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Stillwater, Sweet Grass, Wheatland65 min
Jun 6, 7:12 PM MDTSevere Thunderstorm WarningBYZStillwater, Sweet Grass33 min
Jun 6, 7:16 PM MDTSevere Thunderstorm WarningBYZStillwater, Sweet Grass59 min
Jun 6, 7:16 PM MDTSevere Thunderstorm WarningBYZStillwater, Sweet Grass21 min
Jun 6, 7:39 PM MDTTornado WarningBYZGolden Valley, Wheatland36 min
Jun 6, 7:45 PM MDTSevere Thunderstorm WarningBYZSweet Grass30 min
Jun 6, 7:46 PM MDTTornado WarningBYZStillwater29 min
Jun 6, 7:59 PM MDTSevere Thunderstorm WarningBYZGolden Valley61 min
Jun 6, 8:03 PM MDTFlash Flood WarningBYZGolden Valley, Stillwater, Sweet Grass, Wheatland3 hr
Jun 6, 8:09 PM MDTTornado WarningBYZStillwater, Yellowstone36 min
Jun 6, 8:13 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Stillwater19 min
Jun 6, 8:25 PM MDTSevere Thunderstorm WarningBYZWheatland50 min
Jun 6, 8:45 PM MDTSevere Thunderstorm WarningBYZStillwater30 min
Jun 6, 8:45 PM MDTTornado WarningBYZStillwater, Yellowstone30 min
Jun 6, 8:48 PM MDTFlash Flood WarningBYZGolden Valley, Musselshell, Stillwater, Yellowstone3 hr
Jun 6, 8:53 PM MDTTornado WarningBYZMusselshell, Yellowstone37 min
Jun 6, 9:09 PM MDTSevere Thunderstorm WarningBYZGolden Valley, Musselshell51 min
Jun 6, 9:12 PM MDTSevere Thunderstorm WarningBYZStillwater18 min
Jun 6, 9:16 PM MDTTornado WarningBYZYellowstone29 min
Jun 6, 9:45 PM MDTTornado WarningBYZYellowstone30 min
Jun 6, 9:54 PM MDTSevere Thunderstorm WarningBYZMusselshell, Yellowstone51 min
Jun 6, 10:15 PM MDTTornado WarningBYZYellowstone30 min
Jun 6, 10:16 PM MDTSpecial Weather StatementBYZRosebud59 min
Jun 6, 10:42 PM MDTSevere Thunderstorm WarningBYZBig Horn, Musselshell, Rosebud, Treasure, Yellowstone63 min
Jun 6, 11:42 PM MDTSevere Thunderstorm WarningBYZRosebud35 min
Jun 6, 11:50 PM MDTSpecial Weather StatementBYZSweet Grass55 min
Jun 7, 12:06 AM MDTSpecial Weather StatementBYZCuster54 min
Jun 7, 12:16 AM MDTSpecial Weather StatementBYZBig Horn29 min
Jun 7, 12:58 AM MDTSpecial Weather StatementBYZBig Horn32 min
Jun 7, 1:59 AM MDTSpecial Weather StatementBYZTreasure61 min
Jun 7, 2:02 AM MDTSpecial Weather StatementBYZCarter58 min
Jun 7, 3:20 AM MDTFlash Flood WarningBYZMusselshell, Rosebud, Treasure3 hr
Jun 7, 8:17 AM MDTAreal Flood WarningBYZGolden Valley, Musselshell, Wheatland7 days
Jun 6, 9:47 PM MDTSpecial Weather StatementBYZSheridan58 min

Nearby

Special Weather Statements in Montana, 2011Every special weather statement in 2011

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.