Alert archive / Montana / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 53, NWS Glasgow, MT

June 16, 2016Garfield County, Petroleum County, Montana

NWS Glasgow, MT issued this severe thunderstorm warning at Jun 16, 2016, 12:32 AM MDT for Garfield County, Petroleum County, Montana. It was in force for 58 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
Jun 16, 2016, 12:32 AM MDT (06:32 UTC)
Expired
Jun 16, 2016, 1:30 AM MDT
In force
58 min
Issued by
NWS Glasgow, MT
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Garfield County, MT, Petroleum County, MT

The radar

The Glasgow radar (KGGW), 135 km from the middle of the area, began a volume at 06:32 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

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 6.5 hours before the alert went out and 137 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, Glasgow Intl Airport, MT at 00:00Z on 2016-06-16Temperature 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, Glasgow Intl Airport, MT at 00:00Z on 2016-06-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939587897Sfc1 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
1681 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
244 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 Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 15, 8:48 PM MDT, 3 hours 44 minutes earlier.

Area forecast discussion, Jun 15, 8:48 PM MDT, 3 hours 44 minutes before
Area Forecast Discussion...UPDATED
National Weather Service GLASGOW MT
848 PM MDT WED JUN 15 2016

.SHORT TERM...for northeast Montana...tonight through Fri...

Most of Northeast Montana has been highlighted for a slight risk
for severe thunderstorms this evening. So far, conditions remain
quiet. Satellite and radar imagery shows some convection beginning
west of BYZ, and moving northeast. The challenge therefore is
whether or not to pull out the severe wording of damaging winds
and large hail from this evening's forecast. Made a request to SPC
to reassess their highlight for our area. The latest GGW sounding
strongly suggests little convective potential. There is a cap at
400mb that does not show up on the model sounding. SPC expected
high based convection. So will go ahead and remove severe
conbvective wording.

Templer

Previous Discussion:
The forecast for the rest of today and tonight will remain similar
to the previous iteration. Main changes to the forecast include
some refinement to the PoP and QPF grids. Most of the severe
activity with the thunderstorms tonight should remain in the
southern areas, but at least slight chances for severe
thunderstorms will remain across the region. Bigelbach

Previous Discussion: Southwest flow aloft will continue in the
short term with an upper trough/low on the Pacific Coast and an
upper ridge to the east.

A cold front has moved to the south and east of the forecast area
early this morning taking the thunderstorms with it. Meanwhile, a
shortwave trough in southwest flow aloft was out of Eastern Idaho
and into South Central Montana at 08z. This wave will move through
Petroleum and Garfield Counties between 12z and 15z this morning
and Valley County in the late morning today. Expect some showers
and thunderstorms with this wave this morning which could linger
into the afternoon especially near the Canadian border.

Surface low will develop over Eastern Wyoming today with an
inverted surface trough developing along the MT/Dakota border
this afternoon. This inverted trough will act as a frontal
boundary. Surface based CAPE and instability will be limited both
today and tonight with cooler air mass over the area and frontal
boundary to the east. However, potential does exist for elevated
convection especially tonight as 40-50 knots southeast low level
jet in the Dakotas and Eastern Montana intersects a moist
shortwave trough moving through the forecast area. Could see some
severe thunderstorms mainly tonight with large hail being the main
threat although damaging winds will also be possible. Could also
see locally heavy rain mainly north of the Missouri River with
precipitable water around 1.25 inches.

The shortwave trough moves to the northeast Thursday morning and
the inverted surface trough moves to the east. Surface high
pressure moves into the area with mainly dry weather. West to
northwest winds on Thursday may become stronger enough in the
afternoon for a Lake Wind Advisory for Fort Peck Lake.

Models have a wave Thursday Night and Friday morning that could
bring enough moisture for a chance of showers and thunderstorms
for parts of Northeast Montana.

Another wave approaches the area from the southwest Friday
afternoon which could bring another chance for showers and
thunderstorms. Forrester

.LONG TERM...Fri night through Wed...
The only real change to the long term forecast was to ramp up
pops for Saturday and Saturday evening with better 12z model
consensus surrounding timing and track of shortwave. Ahead of this
wave, temperatures will rise into the 80s and surface dew points
will be in the high 50s and low 60s. A warm and moist environment
will allow the potential for thunderstorms, some potentially
severe. High forecast sounding precipitable water values also mean
that any storms may come along with locally heavy rainfall.
Otherwise, inherited forecast is on track for now. Maliawco

Previous long term discussion...

The extended period begins Friday evening with Northeast Montana
under a southwest flow aloft. To the south will be a large high
pressure area. To the north in Canada a low pressure trough will
slowly move east across southern Canada during the period. The
movement of the trough east will slowly veer winds aloft to the
northwest by early next week. Since the area will remain on the
boundary between the two air masses, expect overrunning moisture
to bring about a chance for showers through the weekend and into
early next week when a ridge moves over the Northern Rockies. This
will bring drier and warmer conditions.

friday night through saturday night: 700mb temperatures range from
1C degree in the nw corner of the CWA to 12C in the se corner,
while the northeast and southwest corners will come in around 5C.
There will be a clear temperature boundary between the competing
air masses. The trough churning off the Northwest Coast will be
sending moisture in the sw flow across this frontal boundary,
produce a chance for rain showers and thunderstorms. The best QPF
will be Saturday night for GFS and Saturday for the EC. So will do
a blend of pops and QPF.

Sunday through Tuesday: the picture becomes more murky, but both
the GFS and EC show the Canadian trough winning by pushing the
boundary south of Nemont. This will bring widespread cooler
temperatures but mostly dry conditions.

Templer

&&

.AVIATION...
VFR conditions will prevail this evening, however, MVFR CIGS are
possible with remaining showers and any thunderstorms as they
track across the CWA. Winds will be northeast at 10 to 15 kts,
though may be gusty and erratic near any storms. Proton

&&

.GLASGOW WATCHES/WARNINGS/ADVISORIES...NONE.

&&

weather.gov/glasgow
Hazardous weather outlook, Jun 15, 2:33 PM MDT, 9 hours 59 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GLASGOW MT
233 PM MDT WED JUN 15 2016

MTZ016>027-059>062-161200-
CENTRAL AND SOUTHEAST PHILLIPS-CENTRAL AND SOUTHERN VALLEY-
DANIELS-SHERIDAN-WESTERN ROOSEVELT-PETROLEUM-GARFIELD-MCCONE-
RICHLAND-DAWSON-PRAIRIE-WIBAUX-NORTHERN PHILLIPS-
SOUTHWEST PHILLIPS-NORTHERN VALLEY-EASTERN ROOSEVELT-
233 PM MDT WED JUN 15 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHEAST
MONTANA.

.DAY ONE...TODAY AND TONIGHT

A LOW PRESSURE SYSTEM WILL MOVE THROUGH THE AREA THIS AFTERNOON
AND TONIGHT. THIS WILL BRING SHOWERS TODAY...AND SHOWERS AND
THUNDERSTORMS TONIGHT. SOME SEVERE STORMS WITH LARGE HAIL AND
DAMAGING WINDS ARE POSSIBLE. LOCALLY HEAVY RAIN WILL BE POSSIBLE
NORTH OF THE MISSOURI RIVER AS WELL TONIGHT.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

WEST TO NORTHWEST WINDS 15 TO 25 MPH ARE EXPECTED THURSDAY
AFTERNOON. A LAKE WIND ADVISORY MAY BE NEEDED FOR FORT PECK LAKE.

SOME CHANCES FOR SHOWERS AND THUNDERSTORMS WILL EXIST NEAR THE
NORTH DAKOTA BORDER FOR SATURDAY. A FEW OF THESE THUNDERSTORMS MAY
BECOME SEVERE.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Special weather statement, Jun 15, 10:34 PM MDT, 1 hour 58 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1034 PM MDT WED JUN 15 2016

MTZ020-023>025-160515-
WESTERN ROOSEVELT MT-DAWSON MT-RICHLAND MT-MCCONE MT-
1034 PM MDT WED JUN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL MCCONE...WEST CENTRAL
RICHLAND...NORTHWESTERN DAWSON AND SOUTHWESTERN ROOSEVELT COUNTIES
UNTIL 1115 PM MDT...

AT 1034 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 14
MILES SOUTHEAST OF NELSON CREEK REC AREA...OR 16 MILES WEST OF
CIRCLE... MOVING NORTHEAST AT 45 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
CIRCLE...RICHEY...VIDA AND WELDON.

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

LAT...LON 4732 10599 4753 10621 4810 10550 4753 10490
TIME...MOT...LOC 0434Z 238DEG 41KT 4747 10595

TEMPLER
Special weather statement, Jun 15, 10:48 PM MDT, 1 hour 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1048 PM MDT WED JUN 15 2016

MTZ017-020-022-023-160530-
CENTRAL AND SOUTHERN VALLEY MT-WESTERN ROOSEVELT MT-GARFIELD MT-
MCCONE MT-
1048 PM MDT WED JUN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN VALLEY...
NORTHWESTERN MCCONE...NORTHEASTERN GARFIELD AND SOUTHWESTERN
ROOSEVELT COUNTIES UNTIL 1130 PM MDT...

AT 1047 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 12
MILES WEST OF NELSON CREEK REC AREA...OR 24 MILES NORTHEAST OF
JORDAN... MOVING NORTHEAST AT 55 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
NELSON CREEK REC AREA...FRAZER...ROCK CREEK REC AREA...
HAXBY AND OSWEGO.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

IF ON OR NEAR FORT PECK LAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 10 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW! DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 4732 10652 4749 10681 4824 10623 4795 10568
TIME...MOT...LOC 0447Z 223DEG 49KT 4754 10649

TEMPLER
Special weather statement, Jun 15, 11:05 PM MDT, 1 hour 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1105 PM MDT WED JUN 15 2016

MTZ017-022-023-160545-
CENTRAL AND SOUTHERN VALLEY MT-GARFIELD MT-MCCONE MT-
1105 PM MDT WED JUN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL VALLEY...WEST
CENTRAL MCCONE AND NORTHEASTERN GARFIELD COUNTIES UNTIL 1145 PM
MDT...

AT 1104 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR JORDAN...MOVING NORTHEAST AT 45 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
JORDAN...THE PINES REC AREA...HELL CREEK REC AREA...
ROCK CREEK REC AREA...NELSON CREEK REC AREA AND HAXBY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

IF ON OR NEAR FORT PECKLAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 10 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW! DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 4718 10675 4729 10705 4806 10670 4775 10599
TIME...MOT...LOC 0504Z 207DEG 41KT 4738 10679

TEMPLER
Special weather statement, Jun 15, 11:32 PM MDT, 1 hour before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GLASGOW MT
1132 PM MDT WED JUN 15 2016

MTZ017-022-023-160615-
CENTRAL AND SOUTHERN VALLEY MT-GARFIELD MT-MCCONE MT-
1132 PM MDT WED JUN 15 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL VALLEY...WESTERN
MCCONE AND CENTRAL GARFIELD COUNTIES UNTIL 1215 AM MDT...

AT 1131 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 8
MILES SOUTHEAST OF BRUSETT...OR 9 MILES WEST OF JORDAN...MOVING
NORTHEAST AT 55 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
JORDAN...THE PINES REC AREA...BRUSETT...HELL CREEK REC AREA AND STEVE
FORK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO
STATIONS AND AVAILABLE TELEVISION STATIONS FOR ADDITIONAL INFORMATION
AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

IF ON OR NEAR FORT PECK LAKE...GET OUT OF THE WATER AND MOVE INDOORS
OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE OUT TO 10 MILES
FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW! DO
NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 4713 10700 4724 10739 4803 10702 4764 10620
TIME...MOT...LOC 0531Z 208DEG 48KT 4736 10711

TEMPLER
Local storm report, Jun 16, 12:04 AM MDT, 28 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 15, 10:34 PM MDTSpecial Weather StatementGGWMcCone41 min
Jun 15, 10:42 PM MDTSevere Thunderstorm WarningGGWDawson, McCone, Richland, Roosevelt33 min
Jun 15, 10:48 PM MDTSpecial Weather StatementGGWMcCone42 min
Jun 15, 11:05 PM MDTSpecial Weather StatementGGWGarfield40 min
Jun 15, 11:18 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Roosevelt, Valley27 min
Jun 15, 11:32 PM MDTSpecial Weather StatementGGWGarfield43 min
Jun 15, 11:44 PM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley46 min
Jun 15, 11:54 PM MDTSevere Thunderstorm WarningGGWDaniels, McCone, Roosevelt, Valley35 min
Jun 16, 12:26 AM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Roosevelt, Valley49 min
Jun 16, 1:01 AM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Richland, Roosevelt, Valley59 min
Jun 16, 1:24 AM MDTSevere Thunderstorm WarningGGWGarfield, McCone, Valley66 min
Jun 16, 1:36 AM MDTSpecial Weather StatementGGWRoosevelt39 min
Jun 16, 1:47 AM MDTSpecial Weather StatementGGWValley43 min
Jun 16, 1:54 AM MDTSpecial Weather StatementGGWRoosevelt51 min
Jun 16, 2:19 AM MDTSpecial Weather StatementGGWSheridan41 min
Jun 16, 2:23 AM MDTSpecial Weather StatementGGWValley52 min
Jun 16, 3:01 AM MDTSpecial Weather StatementGGWSheridan44 min
Jun 16, 4:24 AM MDTSpecial Weather StatementGGWPhillips51 min

Nearby

Severe Thunderstorm Warnings in Montana, 2016Every severe thunderstorm warning 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.