Alert archive / Montana / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 54, NWS Missoula, MT

July 10, 2006Lincoln County, Montana

NWS Missoula, MT issued this severe thunderstorm warning at Jul 10, 2006, 4:21 PM MDT for Lincoln County, Montana. It was in force for 45 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
Jul 10, 2006, 4:21 PM MDT (22:21 UTC)
Expired
Jul 10, 2006, 5:06 PM MDT
In force
45 min
Issued by
NWS Missoula, MT
Area
Counties, with a storm outline in the text

County Lincoln County, MT

The radar

The Spokane radar (KOTX), 191 km from the middle of the area, began a volume at 22:21 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, 10.4 hours before the alert went out and 119 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 2006-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 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 2006-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 71 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
4 J/kg
Mixed-layer CIN
-404 J/kg
Mixed-layer LCL
2700 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
71 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 10, 3:03 PM MDT, 1 hour 18 minutes earlier.

Area forecast discussion, Jul 10, 3:03 PM MDT, 1 hour 18 minutes before
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Hazardous weather outlook, Jul 10, 12:52 PM MDT, 3 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE MISSOULA MT
1252 PM MDT MON JUL 10 2006

MTZ003-110200-
FLATHEAD/MISSION VALLEYS-
1252 PM MDT MON JUL 10 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

...A LAKE WIND ADVISORY IS IN EFFECT UNTIL 8 PM MDT THIS EVENING...

A LAKE WIND ADVISORY HAS BEEN ISSUED FOR FLATHEAD LAKE THROUGH 8
PM THIS EVENING. PLEASE SEE GTFNPWMSO FOR FURTHER DETAILS. BOATERS
ON AREA LAKES SHOULD BE ALERT TO ERRATIC GUSTY WINDS THIS
AFTERNOON INTO THE EARLY EVENING HOURS.

IN ADDITION...SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE AREA
THROUGH EARLY THIS EVENING. HAZARDS WITH THESE THUNDERSTORMS WILL
BE STRONG GUSTY WINDS...SMALL HAIL AND BRIEF HEAVY RAIN.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED TO DEVELOP MAINLY
OVER SOUTHWEST MONTANA TUESDAY THROUGH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

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

MTZ001-002-007-043-110200-
KOOTENAI/CABINET REGION-WEST GLACIER REGION-
BUTTE/BLACKFOOT REGION-POTOMAC/SEELEY LAKE REGION-
1252 PM MDT MON JUL 10 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST
MONTANA AND WEST CENTRAL MONTANA.

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL MOVE ACROSS THE AREA THROUGH
THIS EVENING. HAZARDS WITH THUNDERSTORMS TODAY WILL BE STRONG
GUSTY WINDS...SMALL HAIL AND BRIEF HEAVY RAIN. IN ADDITION...A
STRONG PRESSURE GRADIENT WILL SET UP THIS AFTERNOON AND EVENING WITH
THE PASSAGE OF A COOL FRONT. BOATERS ON AREA LAKES SHOULD BE ALERT
TO ERRATIC GUSTY WINDS THIS AFTERNOON INTO THE EARLY EVENING
HOURS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED TO DEVELOP MAINLY
OVER SOUTHWEST MONTANA TUESDAY THROUGH SUNDAY.

.SPOTTER INFORMATION STATEMENT...

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

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 11:57 AM MDTLake Wind AdvisoryMSOFlathead, Lake, Sanders6 hr
Jul 10, 2:53 PM MDTSevere Thunderstorm WarningMSOFlathead36 min

Nearby

Severe Thunderstorm Warnings in Montana, 2006Every severe thunderstorm warning in 2006

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.