Alert archive / Montana / High Wind Warnings in 2007

High Wind Warning 1, NWS Missoula, MT

January 5, 20074 counties in Montana

NWS Missoula, MT issued this high wind warning at Jan 5, 2007, 11:15 AM MST for 4 counties in Montana. It took effect at Jan 5, 2007, 11:00 PM MST. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 5, 2007, 11:15 AM MST (18:15 UTC)
In effect from
Jan 5, 2007, 11:00 PM MST
Expired
Jan 6, 2007, 12:00 AM MST
In force
60 min
Issued by
NWS Missoula, MT

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

The radar

The Missoula radar (KMSX), 110 km from the middle of the area, began a volume at 18:20 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, 6.3 hours before the alert went out and 225 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, Great_falls, MT at 12:00Z on 2007-01-05Temperature 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 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Great_falls, MT at 12:00Z on 2007-01-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 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
1585 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
62 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.

000 
WWUS75 KMSO 051815
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1115 AM MST FRI JAN 5 2007

...SIGNIFICANT WIND EVENT TO IMPACT THE AREA TONIGHT...

.A VERY POTENT WINTER STORM WILL BEGIN TO APPROACH SOUTHWEST MONTANA
OVERNIGHT. AS IT DOES...THE SURFACE PRESSURE GRADIENT WILL BECOME
INTENSELY STRONG. THE TIGHT PRESSURE GRADIENT WILL TRANSLATE TO
HIGH WINDS.

MTZ007-060400-
/O.NEW.KMSO.HW.W.0001.070106T0300Z-070106T1300Z/
BUTTE/BLACKFOOT REGION-
1115 AM MST FRI JAN 5 2007

...HIGH WIND WARNING IN EFFECT FROM 8 PM THIS EVENING TO 6 AM MST
SATURDAY...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HIGH WIND
WARNING...WHICH IS IN EFFECT FROM 8 PM THIS EVENING TO 6 AM MST
SATURDAY. 

SUSTAINED SOUTHERLY WINDS OF 35 TO 45 MPH WITH GUSTS TO 70 MPH ARE
EXPECTED LATE THIS EVENING AND OVERNIGHT. AREAS IMPACTED BY THIS
EVENT WILL BE ALONG MONTANA HIGHWAY 1 AREAS BETWEEN GEORGETOWN
LAKE AND ANACONDA AND THE INTERSTATE 90 CORRIDOR BETWEEN GARRISON
JUNCTION AND ANACONDA. OTHER LOCATIONS...INCLUDING BUTTE...CAN
EXPECT TO SEE SUSTAINED WINDS OF 25 TO 35 MPH WITH GUSTS TO 50 MPH
DURING THIS PERIOD. THIS WIND EVENT WILL TRANSITION TO A WINTER
STORM EVENT SATURDAY MORNING.

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. VERY STRONG WINDS CAN LEAD TO PROPERTY DAMAGE.
TRAVEL IS DISCOURAGED THIS EVENING AND OVERNIGHT.

$$
2 follow-up statements
000 
WWUS75 KMSO 060256
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
756 PM MST FRI JAN 5 2007

...SIGNIFICANT WIND EVENT TO IMPACT THE AREA TONIGHT...

.A VERY POTENT WINTER STORM WILL BEGIN TO APPROACH SOUTHWEST
MONTANA OVERNIGHT. AS IT DOES...THE SURFACE PRESSURE GRADIENT
WILL BECOME INTENSELY STRONG RESULTING IN HIGH WINDS ACROSS THE AREA.

MTZ007-061200-
/O.EXT.KMSO.HW.W.0001.070106T0600Z-070106T1300Z/
BUTTE/BLACKFOOT REGION-
756 PM MST FRI JAN 5 2007

...HIGH WIND WARNING NOW IN EFFECT FROM 11 PM THIS EVENING TO
6 AM MST SATURDAY...

THE HIGH WIND WARNING IS NOW IN EFFECT FROM 11 PM THIS EVENING TO
6 AM MST SATURDAY. 

SUSTAINED SOUTHERLY WINDS OF 35 TO 45 MPH WITH GUSTS TO 70 MPH
ARE EXPECTED LATE THIS EVENING AND OVERNIGHT. AREAS IMPACTED BY
THIS EVENT WILL BE ALONG MONTANA HIGHWAY 1 AREAS BETWEEN
GEORGETOWN LAKE AND ANACONDA AND THE INTERSTATE 90 CORRIDOR
BETWEEN GARRISON JUNCTION AND ANACONDA. OTHER LOCATIONS...
INCLUDING BUTTE...CAN EXPECT TO SEE SUSTAINED WINDS OF 25 TO
35 MPH WITH GUSTS TO 50 MPH DURING THIS PERIOD. THIS WIND EVENT
WILL TRANSITION TO A WINTER STORM EVENT SATURDAY MORNING.

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. VERY STRONG WINDS CAN LEAD TO PROPERTY DAMAGE.


$$
000 
WWUS75 KMSO 060700
NPWMSO

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE MISSOULA MT
1200 AM MST SAT JAN 6 2007

MTZ007-060800-
/O.CAN.KMSO.HW.W.0001.000000T0000Z-070106T1300Z/
BUTTE/BLACKFOOT REGION-
1200 AM MST SAT JAN 6 2007

...HIGH WIND WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE HIGH
WIND WARNING. 

WINDS WILL BE BREEZY IN THE BUTTE BLACKFOOT REGION TONIGHT...BUT
ARE NOW EXPECTED TO REMAIN BELOW WARNING CRITERIA.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 5, 12:21 PM MSTSnow and Blowing Snow AdvisoryMSODeer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more25 hr
Jan 5, 12:21 PM MSTWinter Storm WarningMSODeer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more25 hr

Nearby

High Wind Warnings in Montana, 2007Every high wind warning in 2007

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.