Alert archive / Montana / Wind Advisories in 2016

Wind Advisory 9, NWS Missoula, MT

September 10, 2016Flathead County, Lake County, Sanders County, Montana

NWS Missoula, MT issued this wind advisory at Sep 10, 2016, 2:16 PM MDT for Flathead County, Lake County, Sanders County, Montana. It took effect at Sep 11, 2016, 12:00 PM MDT. It was in force for 16 hr.

The area

The counties it named.

The facts

Issued
Sep 10, 2016, 2:16 PM MDT (20:16 UTC)
In effect from
Sep 11, 2016, 12:00 PM MDT
Expired
Sep 12, 2016, 3:46 AM MDT
In force
16 hr
Issued by
NWS Missoula, MT

Counties Flathead County, MT, Lake County, MT, Sanders County, MT

The radar

The Missoula radar (KMSX), 98 km from the middle of the area, began a volume at 20:14 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, 8.3 hours before the alert went out and 149 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 2016-09-10Temperature 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°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Spokane, WA at 12:00Z on 2016-09-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 85 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
2139 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
85 m²/s²
0-3 km storm-relative helicity
133 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

476 
WWUS75 KMSO 102016
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
216 PM MDT SAT SEP 10 2016

MTZ003-121200-
/O.NEW.KMSO.WI.Y.0009.160911T1800Z-160912T1200Z/
FLATHEAD/MISSION VALLEYS-
216 PM MDT SAT SEP 10 2016

...WIND ADVISORY IN EFFECT FROM NOON SUNDAY TO 6 AM MDT MONDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM NOON SUNDAY TO 6 AM MDT
MONDAY. 

* IMPACTS/TIMING: A COLD FRONT WILL INCREASE WINDS IN THE FLATHEAD
  VALLEY AROUND NOON SUNDAY, PASSING OVER FLATHEAD LAKE AND INTO
  THE MISSION VALLEY THROUGH THE AFTERNOON.

* WINDS: NORTH TO NORTHEAST WINDS 25 TO 35 MPH WITH GUSTS TO 45
  MPH. GUSTS UP OVER 50 MPH POSSIBLE THROUGH EXPOSED AREAS SUCH AS
  BADROCK CANYON.

* FLATHEAD LAKE: WAVES OF 3 TO 4 FEET WILL BE POSSIBLE ON THE
  SOUTHERN AND WESTERN SHORES, INCREASING BETWEEN 3PM AND 6PM.
  ALSO EXPECT UNUSUALLY LARGE WAVES IN POLSON BAY. 

* LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY...
   MISSION VALLEY...POLSON

$$
2 follow-up statements
595 
WWUS75 KMSO 111003
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
403 AM MDT SUN SEP 11 2016


MTZ003-121015-
/O.CON.KMSO.WI.Y.0009.160911T1800Z-160912T1200Z/
FLATHEAD/MISSION VALLEYS-
403 AM MDT SUN SEP 11 2016

...WIND ADVISORY REMAINS IN EFFECT FROM NOON TODAY TO 6 AM MDT
MONDAY...

* IMPACTS/TIMING: A COLD FRONT WILL INCREASE WINDS IN THE FLATHEAD
  VALLEY AROUND TODAY... PASSING OVER FLATHEAD LAKE AND INTO THE
  MISSION VALLEY THROUGH THE EVENING.

* WINDS: NORTH TO NORTHEAST WINDS 25 TO 35 MPH WITH GUSTS TO 45 
  MPH. GUSTS UP OVER 50 MPH POSSIBLE THROUGH EXPOSED AREAS SUCH 
  AS BADROCK CANYON. 

* FLATHEAD LAKE: WAVES OF 3 TO 4 FEET WILL BE POSSIBLE ON THE 
  SOUTHERN AND WESTERN SHORES... INCREASING BETWEEN 3PM AND 6PM. 
  ALSO EXPECT UNUSUALLY LARGE WAVES IN POLSON BAY. 

* LOCATIONS IMPACTED INCLUDE...FLATHEAD LAKE...FLATHEAD VALLEY...
   MISSION VALLEY...POLSON

$$
530 
WWUS75 KMSO 120946
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
346 AM MDT MON SEP 12 2016


MTZ003-121100-
/O.CAN.KMSO.WI.Y.0009.000000T0000Z-160912T1200Z/
FLATHEAD/MISSION VALLEYS-
346 AM MDT MON SEP 12 2016

...WIND ADVISORY IS CANCELLED...

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


$$

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 10, 2:16 PM MDTWinter Weather AdvisoryMSODeer Lodge, Flathead, Granite, Lake, Missoula, Powell and 1 more42 hr

Nearby

Wind Advisories in Montana, 2016Every 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.