Alert archive / Montana / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 35, NWS Billings, MT

June 19, 2015Custer County, Rosebud County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 19, 2015, 3:13 PM MDT for Custer County, Rosebud County, Montana. It was in force for 62 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 19, 2015, 3:13 PM MDT (21:13 UTC)
Expired
Jun 19, 2015, 4:15 PM MDT
In force
62 min
Issued by
NWS Billings, MT
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

Counties Custer County, MT, Rosebud County, MT

The radar

The Billings radar (KBLX), 194 km from the middle of the area, began a volume at 21:12 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 19, 2:51 PM MDTTornado WatchSPC7 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 12:00Z, 9.2 hours before the alert went out and 223 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 12:00Z on 2015-06-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 181 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, Glasgow Intl Airport, MT at 12:00Z on 2015-06-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 86 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
181 J/kg
Mixed-layer CIN
-225 J/kg
Mixed-layer LCL
1086 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
86 m²/s²
0-3 km storm-relative helicity
85 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 Billings, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 19, 9:37 AM MDT, 5 hours 36 minutes earlier.

Area forecast discussion, Jun 19, 9:37 AM MDT, 5 hours 36 minutes before
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Hazardous weather outlook, Jun 19, 4:05 AM MDT, 11 hours 8 minutes before
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In the hours before

Local storm report, Jun 19, 9:52 AM MDT, 5 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
952 AM MDT FRI JUN 19 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1225 AM     TSTM WND DMG     BROADUS                 45.44N 105.41W
06/19/2015                   POWDER RIVER       MT   TRAINED SPOTTER

            TREE LIMBS DOWN ALL OVER TOWN WITH POWER OUTAGES. PEA
            SIZED HAIL ALSO REPORTED.

&&

TNF
Special weather statement, Jun 19, 2:55 PM MDT, 18 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
255 PM MDT FRI JUN 19 2015

MTZ031-032-192200-
NORTHERN ROSEBUD MT-CUSTER MT-
255 PM MDT FRI JUN 19 2015

...SIGNIFICANT WEATHER ADVISORY...

AT 254 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 12 MILES SOUTHWEST OF
MCCLOUD TO 21 MILES NORTHEAST OF FORSYTH...AND MOVING NORTHEAST AT 35
MPH.

NICKEL SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THESE STORMS.

LOCATIONS IMPACTED INCLUDE...
MILES CITY...MATTHEWS RECREATION AREA...ANGELA...ROCK SPRINGS...
STAWBERRY HILL RECREATION ARE AND CARTERSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THESE STORMS...AND MAY
LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4683 10583 4683 10562 4675 10562 4674 10557
      4666 10557 4666 10550 4660 10549 4660 10545
      4657 10544 4657 10525 4639 10537 4629 10657
      4685 10637 4686 10583
TIME...MOT...LOC 2054Z 241DEG 31KT 4679 10580 4645 10630

REIMER
Local storm report, Jun 19, 2:58 PM MDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
258 PM MDT FRI JUN 19 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0245 PM     HAIL             1 N COLSTRIP            45.90N 106.64W
06/19/2015  M0.25 INCH       ROSEBUD            MT   PUBLIC

&&

LD
Local storm report, Jun 19, 3:13 PM MDT, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
313 PM MDT FRI JUN 19 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0615 AM     HEAVY RAIN       10 W BROADUS            45.44N 105.63W
06/19/2015  M1.49 INCH       POWDER RIVER       MT   COCORAHS

0253 PM     HAIL             COLSTRIP                45.88N 106.62W
06/19/2015  M0.88 INCH       ROSEBUD            MT   PUBLIC

            PUBLIC REPORTED NICKEL SIZE HAIL AND HEAVY RAIN WITH SOME
            STREET FLOODING.

0300 PM     HAIL             COLSTRIP                45.88N 106.62W
06/19/2015  M1.00 INCH       ROSEBUD            MT   PUBLIC

            PUBLIC REPORTED QUARTER SIZE HAIL.

&&

WD

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 18, 7:37 PM MDTSpecial Weather StatementBYZStillwater53 min
Jun 18, 8:23 PM MDTSpecial Weather StatementBYZStillwater52 min
Jun 18, 8:56 PM MDTSpecial Weather StatementBYZYellowstone64 min
Jun 18, 9:02 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone45 min
Jun 18, 9:33 PM MDTSpecial Weather StatementBYZStillwater42 min
Jun 18, 9:44 PM MDTSevere Thunderstorm WarningBYZBig Horn61 min
Jun 18, 10:20 PM MDTSevere Thunderstorm WarningBYZBig Horn, Rosebud55 min
Jun 18, 11:10 PM MDTSevere Thunderstorm WarningBYZBig Horn, Powder River, Rosebud65 min
Jun 19, 12:10 AM MDTSevere Thunderstorm WarningBYZCarter, Powder River65 min
Jun 19, 1:12 AM MDTSevere Thunderstorm WarningBYZCarter29 min
Jun 19, 1:50 AM MDTSpecial Weather StatementBYZPowder River40 min
Jun 19, 2:51 PM MDTSevere Thunderstorm WarningBYZCuster, Powder River, Rosebud54 min
Jun 19, 2:55 PM MDTSpecial Weather StatementBYZPrairie65 min
Jun 19, 3:40 PM MDTSevere Thunderstorm WarningBYZCuster, Powder River65 min
Jun 19, 3:49 PM MDTTornado WarningBYZCuster, Powder River26 min
Jun 19, 3:58 PM MDTSevere Thunderstorm WarningBYZCuster62 min
Jun 19, 4:12 PM MDTTornado WarningBYZCuster, Powder River33 min
Jun 19, 4:18 PM MDTSpecial Weather StatementBYZYellowstone57 min
Jun 19, 4:20 PM MDTSevere Thunderstorm WarningBYZFallon55 min
Jun 19, 4:30 PM MDTSevere Thunderstorm WarningBYZBig Horn, Yellowstone60 min
Jun 19, 4:33 PM MDTFlash Flood WarningBYZYellowstone6 hr
Jun 19, 4:41 PM MDTSevere Thunderstorm WarningBYZCarter, Powder River64 min
Jun 19, 5:05 PM MDTSevere Thunderstorm WarningBYZFallon55 min
Jun 19, 5:19 PM MDTSevere Thunderstorm WarningBYZBig Horn56 min
Jun 19, 5:36 PM MDTSpecial Weather StatementBYZPowder River24 min
Jun 19, 5:39 PM MDTSevere Thunderstorm WarningBYZCarter66 min
Jun 18, 10:10 PM MDTSpecial Weather StatementBYZSheridan65 min

Nearby

Severe Thunderstorm Warnings in Montana, 2015Every severe thunderstorm warning in 2015

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.