Alert archive / Montana / Special Weather Statements in 2009

Special Weather Statement, NWS Billings, MT

July 6, 2009Park County, Montana

NWS Billings, MT issued this special weather statement at Jul 6, 2009, 2:16 PM MDT for Park County, Montana. It was in force for 59 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: Jul 6, 2009, 2:16 PM MDT (20:16 UTC)
Expired: Jul 6, 2009, 3:15 PM MDT
In force: 59 min
Issued by: NWS Billings, MT

County Park County, MT

The radar

The Billings radar (KBLX), 154 km from the middle of the area, began a volume at 20:19 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

Great_falls, MT (KTFX), launched 12:00Z, 8.3 hours before the alert went out and 178 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: 33 J/kg
Mixed-layer CIN: -256 J/kg
Mixed-layer LCL: 1575 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 30 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.

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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 Jul 6, 8:59 AM MDT, 5 hours 17 minutes earlier.

Area forecast discussion, Jul 6, 8:59 AM MDT, 5 hours 17 minutes before

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Hazardous weather outlook, Jul 6, 1:50 PM MDT, 26 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BILLINGS MT
150 PM MDT MON JUL 6 2009

MTZ028>042-056>058-063>068-WYZ098-099-072000-
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-
150 PM MDT MON JUL 6 2009

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

SCATTERED THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON AND
TONIGHT AS A STRONG DISTURBANCE MOVES THROUGH THE REGION. SOME OF
THE STORMS MAY BE SEVERE AND PRODUCE DAMAGING WINDS AND LARGE
HAIL. PLEASE BE AWARE OF RAPIDLY CHANGING WEATHER CONDITIONS AND
STAY TUNED FOR POSSIBLE WATCHES AND WARNINGS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THE ACTIVE WEATHER PATTERN IS EXPECTED TO CONTINUE THROUGH MOST OF
THE WEEK. THERE IS A CHANCE OF MAINLY AFTERNOON AND EVENING
THUNDERSTORMS EACH DAY. THE POTENTIAL FOR A FEW SEVERE STORMS
CANNOT BE RULED OUT. STAY TUNED FOR FUTURE UPDATES.

.SPOTTER INFORMATION STATEMENT...

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

JKL

In the hours before

Special weather statement, Jul 6, 1:27 PM MDT, 49 minutes before

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Special weather statement, Jul 6, 1:30 PM MDT, 46 minutes before

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Special weather statement, Jul 6, 1:54 PM MDT, 22 minutes before

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Special weather statement, Jul 6, 1:57 PM MDT, 19 minutes before

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Special weather statement, Jul 6, 2:16 PM MDT, 0 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
Jul 5, 6:09 PM MDT	Special Weather Statement	BYZ	Musselshell	51 min
Jul 5, 6:46 PM MDT	Special Weather Statement	BYZ	Musselshell	59 min
Jul 5, 7:37 PM MDT	Special Weather Statement	BYZ	Fallon	38 min
Jul 5, 8:20 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	55 min
Jul 5, 9:20 PM MDT	Special Weather Statement	BYZ	Fallon	40 min
Jul 6, 1:27 PM MDT	Special Weather Statement	BYZ	Carbon	48 min
Jul 6, 1:30 PM MDT	Special Weather Statement	BYZ	Park	45 min
Jul 6, 1:54 PM MDT	Special Weather Statement	BYZ	Carbon	51 min
Jul 6, 1:57 PM MDT	Special Weather Statement	BYZ	Sweet Grass	63 min
Jul 6, 2:46 PM MDT	Special Weather Statement	BYZ	Carbon	59 min
Jul 6, 3:14 PM MDT	Special Weather Statement	BYZ	Big Horn	61 min
Jul 6, 3:59 PM MDT	Special Weather Statement	BYZ	Big Horn, Yellowstone	61 min
Jul 6, 4:31 PM MDT	Special Weather Statement	BYZ	Park	44 min
Jul 6, 5:16 PM MDT	Special Weather Statement	BYZ	Wheatland	74 min
Jul 6, 5:43 PM MDT	Severe Thunderstorm Warning	BYZ	Wheatland	62 min
Jul 6, 5:47 PM MDT	Special Weather Statement	BYZ	Powder River	58 min
Jul 6, 4:50 PM MDT	Special Weather Statement	BYZ	Sheridan	55 min

Nearby

Special Weather Statements in Montana, 2009 Every special weather statement in 2009

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.