Alert archive / Montana / Special Weather Statements in 2016

Special Weather Statement, NWS Missoula, MT

January 30, 2016Missoula County, Montana

NWS Missoula, MT issued this special weather statement at Jan 30, 2016, 3:52 PM MST for Missoula County, Montana. It was in force for 23 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
Jan 30, 2016, 3:52 PM MST (22:52 UTC)
Expired
Jan 30, 2016, 4:15 PM MST
In force
23 min
Issued by
NWS Missoula, MT

County Missoula County, MT

The radar

The Missoula radar (KMSX), 12 km from the middle of the area, began a volume at 22:58 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, 10.9 hours before the alert went out and 200 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 2016-01-30Temperature 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, Spokane, WA at 12:00Z on 2016-01-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 41 square meters per square second.193958Sfc1 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
887 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
41 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Missoula, MT wrote its last area forecast discussion before this special weather statement went out at Jan 30, 2:48 PM MST, 1 hour 4 minutes earlier.

Area forecast discussion, Jan 30, 2:48 PM MST, 1 hour 4 minutes before
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In the hours before

Special weather statement, Jan 30, 10:50 AM MST, 5 hours 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
1050 AM MST SAT JAN 30 2016

MTZ004>007-043-301830-
POTOMAC/SEELEY LAKE REGION MT-MISSOULA/BITTERROOT VALLEYS MT-
BITTERROOT/SAPPHIRE MOUNTAINS MT-BUTTE/BLACKFOOT REGION MT-
LOWER CLARK FORK REGION MT-
1050 AM MST SAT JAN 30 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN POWELL...EAST CENTRAL
MINERAL...NORTHEASTERN GRANITE AND SOUTHERN MISSOULA COUNTIES UNTIL
1130 AM MST...

AT 1049 AM MST...DOPPLER RADAR WAS TRACKING A BAND OF SNOW SHOWERS
ALONG A LINE EXTENDING FROM FRENCHTOWN TO 8 MILES NORTHWEST OF
GARRISON...AND MOVING EAST AT 30 MPH. THIS BAND WILL BE CAPABLE OF
PRODUCING MODERATE TO HEAVY SNOW CREATING DIFFICULT DRIVING
CONDITIONS IN A VERY SHORT DISTANCE.

LOCATIONS IMPACTED INCLUDE...
MISSOULA...DRUMMOND...ALBERTON...WYE...GARRISON...FRENCHTOWN...EAST
MISSOULA...BONNER-WEST RIVERSIDE...RIVERBEND...NINEMILE...GARNET...TURAH...
BEARMOUTH...ELLISTON...QUARTZ...GOLDCREEK...TWIN CREEKS...JENS...CLINTON
AND CYR.

LAT...LON 4645 11231 4644 11232 4642 11231 4638 11235
      4639 11240 4636 11242 4635 11245 4633 11245
      4633 11246 4634 11247 4709 11493 4719 11477
      4657 11231 4654 11230
TIME...MOT...LOC 1749Z 284DEG 24KT 4700 11425 4661 11293
Special weather statement, Jan 30, 10:51 AM MST, 5 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MISSOULA MT
1051 AM MST SAT JAN 30 2016

IDZ006-MTZ005>007-301830-
SOUTHERN CLEARWATER MOUNTAINS ID-MISSOULA/BITTERROOT VALLEYS MT-
BITTERROOT/SAPPHIRE MOUNTAINS MT-BUTTE/BLACKFOOT REGION MT-
1051 AM MST SAT JAN 30 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN IDAHO...CENTRAL DEER
LODGE...CENTRAL RAVALLI...SOUTHWESTERN GRANITE AND CENTRAL SILVER BOW
COUNTIES UNTIL 1130 AM MST/1030 AM PST/...

AT 1051 AM MST/951 AM PST/...DOPPLER RADAR WAS TRACKING A BAND OF
SNOW SHOWERS ALONG A LINE EXTENDING FROM 28 MILES NORTHEAST OF
LOWELL TO 7 MILES WEST OF WEST VALLEY...AND MOVING EAST AT 20 MPH.
THIS BAND WILL BE CAPABLE OF PRODUCING MODERATE TO HEAVY SNOW
CREATING DIFFICULT DRIVING CONDITIONS IN A VERY SHORT DISTANCE.

LOCATIONS IMPACTED INCLUDE...
HAMILTON...ANACONDA...BUTTE...SILVER BOW...WALKERVILLE...WEST VALLEY...
GREGSON HOT SPRINGS...WOODSIDE...PINESDALE...CORVALLIS...CRACKERVILLE...
SKALKAHO PASS...NISSLER...RAMSAY...OPPORTUNITY...JANNEY...NEWCOMB...
GRANTSDALE AND CHARLOS HEIGHTS.

LAT...LON 4587 11242 4628 11528 4650 11511 4606 11247
      4602 11244 4593 11244 4589 11240
TIME...MOT...LOC 1751Z 279DEG 19KT 4640 11514 4614 11317
Special weather statement, Jan 30, 11:32 AM MST, 4 hours 20 minutes before
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Special weather statement, Jan 30, 11:34 AM MST, 4 hours 18 minutes before
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Local storm report, Jan 30, 2:17 PM MST, 1 hour 35 minutes before
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Special weather statement, Jan 30, 3:52 PM MST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 30, 9:05 AM MSTSpecial Weather StatementMSOMissoula40 min
Jan 30, 9:07 AM MSTSpecial Weather StatementMSORavalli38 min
Jan 30, 10:03 AM MSTSpecial Weather StatementMSORavalli42 min
Jan 30, 10:04 AM MSTSpecial Weather StatementMSOMissoula41 min
Jan 30, 10:34 AM MSTWinter Weather AdvisoryMSODeer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more33 hr
Jan 30, 10:50 AM MSTSpecial Weather StatementMSOMissoula40 min
Jan 30, 10:51 AM MSTSpecial Weather StatementMSODeer Lodge39 min
Jan 30, 11:32 AM MSTSpecial Weather StatementMSODeer Lodge43 min
Jan 30, 11:34 AM MSTSpecial Weather StatementMSOMissoula41 min

Nearby

Special Weather Statements in Montana, 2016Every special weather statement 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.