Alert archive / Montana / Wind Advisories in 2016

Wind Advisory 10, NWS Missoula, MT

October 10, 2016Lemhi County, Idaho; 4 counties in Montana

NWS Missoula, MT issued this wind advisory at Oct 10, 2016, 9:54 AM MDT for Lemhi County, Idaho; 4 counties in Montana. It was in force for 4 hr.

The area

The counties it named.

The facts

Issued: Oct 10, 2016, 9:54 AM MDT (15:54 UTC)
Expired: Oct 10, 2016, 2:06 PM MDT
In force: 4 hr
Issued by: NWS Missoula, MT

Counties Lemhi County, ID, Deer Lodge County, MT, Granite County, MT, Powell County, MT, Silver Bow County, MT

The radar

The Missoula radar (KMSX), 127 km from the middle of the area, began a volume at 15:57 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, 3.9 hours before the alert went out and 254 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: 476 m above ground
0-6 km bulk shear: 60 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 487 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

200 
WWUS75 KMSO 101554
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
954 AM MDT MON OCT 10 2016


IDZ010-MTZ007-102100-
/O.NEW.KMSO.WI.Y.0010.161010T1554Z-161010T2100Z/
EASTERN LEMHI COUNTY-BUTTE/BLACKFOOT REGION-
954 AM MDT MON OCT 10 2016

...WIND ADVISORY IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT UNTIL 3 PM MDT THIS AFTERNOON. 

* IMPACTS/TIMING: AN UPPER LEVEL DISTURBANCE IS CAUSING STRONG
  WINDS TO MIX TO THE SURFACE ACROSS LEMHI COUNTY AND SOUTHWEST
  MONTANA. THESE STRONG WINDS WILL CAUSE DIFFICULT DRIVING
  CONDITIONS ON INTERSTATE 90...HIGHWAY 93 AND HIGHWAY 28.

* WINDS: WEST WINDS 20 TO 30 MPH WITH GUSTS UP TO 50 MPH.

* LOCATIONS IMPACTED INCLUDE...BANNOCK PASS...HIGHWAY 28 TENDOY 
  TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...
  LEMHI PASS...SALMON...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 
  GARRISON TO ELLISTON...HOMESTAKE PASS...MACDONALD PASS

$$

MTZ003-102100-
/O.CON.KMSO.LW.Y.0012.000000T0000Z-161010T2100Z/
FLATHEAD/MISSION VALLEYS-
954 AM MDT MON OCT 10 2016

...LAKE WIND ADVISORY REMAINS IN EFFECT UNTIL 3 PM MDT THIS
AFTERNOON FOR FLATHEAD LAKE...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A LAKE WIND
ADVISORY FOR FLATHEAD LAKE...WHICH IS IN EFFECT UNTIL 3 PM MDT
THIS AFTERNOON.

* IMPACTS/TIMING: A STRONG COLD FRONT IS MAKING ITS WAY SOUTH 
  ACROSS FLATHEAD LAKE AND CAUSING GUSTY NORTH WINDS AND CHOPPY 
  CONDITIONS. WINDS AND WAVES WILL INCREASE THIS MORNING 
  CREATING HAZARDOUS CONDITIONS ON THE LAKE. BY THIS AFTERNOON 
  THE STRONG WINDS WILL SUBSIDE BUT IT WILL CONTINUE TO BE 
  BREEZY. 

* WINDS: NORTHERLY WINDS 20 TO 30 MPH WITH GUSTS TO 40 MPH

* WAVE HEIGHTS: 1 TO 3 FEET.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A LAKE WIND ADVISORY INDICATES THAT WINDS WILL CAUSE ROUGH CHOP
ON AREA LAKES. SMALL BOATS WILL BE ESPECIALLY PRONE TO CAPSIZING.

NOTE...THE EXPERIMENTAL WAVE HEIGHT FORECASTS ARE REPRESENTATIVE
OF THE MID LAKE WATERS AND DOWNWIND SHORES. WAVE HEIGHTS MAY BE
SIGNIFICANTLY LESS ON UPWIND SHORES.

&&

$$

1 follow-up statement

596 
WWUS75 KMSO 102006
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
206 PM MDT MON OCT 10 2016



IDZ010-MTZ007-102115-
/O.CAN.KMSO.WI.Y.0010.000000T0000Z-161010T2100Z/
EASTERN LEMHI COUNTY-BUTTE/BLACKFOOT REGION-
206 PM MDT MON OCT 10 2016

...WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND
ADVISORY. 

THE WINDS HAVE DECREASED THIS AFTERNOON SO THE WIND ADVISORY WAS
CANCELLED.

$$

MTZ003-102115-
/O.CAN.KMSO.LW.Y.0012.000000T0000Z-161010T2100Z/
FLATHEAD/MISSION VALLEYS-
206 PM MDT MON OCT 10 2016

...LAKE WIND ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE LAKE
WIND ADVISORY. 

THE WINDS HAVE DECREASED THIS AFTERNOON SO THE WIND ADVISORY WAS
CANCELLED.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 10, 6:45 AM MDT	Lake Wind Advisory	MSO	Flathead, Lake, Sanders	7 hr

Nearby

Wind Advisories in Montana, 2016 Wind Advisories in Idaho, 2016 Every wind advisory 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.