Alert archive / Montana / Severe Thunderstorm Warnings in 2016
Severe Thunderstorm Warning 84, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Aug 1, 2016, 12:20 AM MDT for Powder River County, Montana. It was in force for 30 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
- Aug 1, 2016, 12:20 AM MDT (06:20 UTC)
- Expired
- Aug 1, 2016, 12:50 AM MDT
- In force
- 30 min
- Issued by
- NWS Billings, MT
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Powder River County, MT
The radar
The Billings radar (KBLX), 237 km from the middle of the area, began a volume at 06:20 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
Rapid City, SD (KRAP), launched 00:00Z, 6.3 hours before the alert went out and 262 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.
- Mixed-layer CAPE
- 2220 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 1694 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 43 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
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 Jul 31, 10:51 PM MDT, 1 hour 29 minutes earlier.
Area forecast discussion, Jul 31, 10:51 PM MDT, 1 hour 29 minutes before
Area Forecast Discussion...Updated
National Weather Service Billings MT
1051 PM MDT SUN JUL 31 2016
.UPDATE...
Quick update to adjust for radar trends. Line of convection
heading through Rosebud and into Powder River next few hours.
Models shift activity NE with time, so trended it a bit that way
overnight. BT
&&
.SHORT TERM...valid for Mon and Tue...
Upper level low is moving across southwest Canada this afternoon
trailing a trof into the pacific northwest heading eastward toward
Montana. Diffluent flow over the area is deepening surface low
over western zones and allowing a weak cold front to work
southward behind it. Further east a surface trof/dryline has set
up in Carter and Fallon counties where convective initiation is
ongoing. As the upper trof gets closer the eastern dry line will
shift into the Dakotas taking the threat of severe storms with it.
The surface low will track southeast allowing the slightly cooler
air and gusty northwest winds to work through the area during the
evening hours. Isolated high based storms are expected to develop
over western mountains and in the vicinity of the cold front and
slowly work east and northeast through late tonight. Do not expect
much precipitation with this activity but gusty winds and
lightning will present a continued fire hazard into late evening.
Expect a quiet day on Monday as upper system shifts east of the
area and zonal to weak ridgy pattern develops. Surface ridge over
the area will keep temperatures about 5 to 10 degrees cooler than
Sunday and also help protect the area from gusty west winds aloft
mixing to the surface. Tuesday is another hot pre-frontal day with
enhanced fire weather concerns. This system looks a bit more
potent than todays as the core of the system is a couple hundred
miles further south. Dry downslope winds will limit convective
potential Tuesday into Tuesday evening but as the front arrives
overnight could see a period of showers and thunderstorms going
into a cooler Wednesday. Chambers
.LONG TERM...valid for Wed...Thu...Fri...Sat...Sun...
The models in extended forecast remain for the most part
consistent. Behind the front on Wednesday, winds will remain gusty
out of the northwest. Temperatures will also be cooler around 10
to 15 degrees cooler than Tuesday. Thursday flow will become more
zonal and the day will remain dry with temperatures just below
normal.
Friday and into the weekend, flow will become more southwesterly.
This will give the area a push of monsoonal moisture. This will
give much of the area a chance for rain. Also with the southwest
flow, the are will be able to tap into some warmer air in the
southwest and some downslope warming. As such, temperatures will
be warming slight to around normal. Reimer
&&
.AVIATION...
Scattered showers and thunderstorms will move through south
central and southeast Montana the rest of the evening. Wind gusts
to 40 mph and brief moderate rain can be expected in the stronger
cells. Areas east of KMLS could have scattered stronger storms
during the early overnight hours, (around midnight and shortly
thereafter). These storms could contain some hail and strong wind
gusts, along with heavy rain, producing local mvfr conditions.
Otherwise, clouds will decrease from northwest to southeast
through the remainder of the night. TWH
&&
.PRELIMINARY POINT TEMP/POPS...
Mon Tue Wed Thu Fri Sat Sun
-----------------------------------------------------------
BIL 061/089 060/097 063/086 055/084 057/091 062/089 061/089
10/U 01/U 21/U 11/U 11/U 12/T 22/T
LVM 049/088 050/096 052/082 045/085 047/090 052/088 053/088
00/U 02/T 21/U 11/U 11/U 12/T 22/T
HDN 061/090 059/098 063/088 052/086 055/094 061/092 060/090
20/U 01/U 21/U 11/U 11/U 12/T 22/T
MLS 065/091 061/099 067/086 056/084 059/093 064/091 062/089
31/U 01/U 21/B 11/U 11/U 22/T 22/T
4BQ 065/092 061/099 067/088 054/085 059/092 063/090 059/088
40/U 02/T 21/B 11/U 12/T 22/T 22/T
BHK 062/090 057/093 064/085 052/081 055/089 059/086 057/082
32/W 01/U 21/B 11/U 11/U 22/T 22/T
SHR 058/089 056/097 060/089 050/085 053/091 056/089 056/089
20/U 01/U 21/B 11/U 12/T 22/T 22/T
&&
.BYZ WATCHES/WARNINGS/ADVISORIES...
MT...None.
WY...None.
&&
weather.gov/billingsHazardous weather outlook, Jul 31, 2:25 PM MDT, 9 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BILLINGS MT 225 PM MDT SUN JUL 31 2016 MTZ033-037-312130- FALLON-CARTER- 225 PM MDT SUN JUL 31 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST MONTANA. .DAY ONE...THIS AFTERNOON AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
In the hours before
Special weather statement, Jul 31, 7:43 PM MDT, 4 hours 37 minutes before
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</html>Local storm report, Jul 31, 7:44 PM MDT, 4 hours 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
744 PM MDT SUN JUL 31 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0710 PM TSTM WND GST 1 WNW BILLINGS 45.79N 108.53W
07/31/2016 M55.00 MPH YELLOWSTONE MT TRAINED SPOTTER
0707 PM TSTM WND GST 3 NW BILLINGS 45.81N 108.55W
07/31/2016 M50.00 MPH YELLOWSTONE MT ASOS
0700 PM TSTM WND GST 4 SW BILLINGS 45.75N 108.57W
07/31/2016 M51.00 MPH YELLOWSTONE MT CO-OP OBSERVER
&&
VLSSpecial weather statement, Jul 31, 8:39 PM MDT, 3 hours 41 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BILLINGS MT 839 PM MDT SUN JUL 31 2016 MTZ038-057-010345- NORTHERN BIG HORN MT-SOUTHERN BIG HORN MT- 839 PM MDT SUN JUL 31 2016 ...SIGNIFICANT WEATHER ADVISORY... AT 838 PM MDT...DOPPLER RADAR WAS TRACKING A CLUSTER OF STRONG THUNDERSTORMS 8 MILES SOUTHWEST OF HARDIN...MOVING EAST AT 35 MPH. WIND GUSTS OF 50 TO 55 MPH ARE POSSIBLE WITH THESE STORMS. LOCATIONS IMPACTED INCLUDE... HARDIN...CROW AGENCY AND ST. XAVIER. THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE. LAT...LON 4542 10779 4571 10790 4591 10714 4546 10700 TIME...MOT...LOC 0238Z 249DEG 29KT 4562 10770 WALSH
Special weather statement, Jul 31, 9:54 PM MDT, 2 hours 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
954 PM MDT SUN JUL 31 2016
MTZ038-058-WYZ098-099-010500-
SOUTHERN ROSEBUD MT-SOUTHERN BIG HORN MT-SHERIDAN FOOTHILLS WY-
NORTHEAST BIG HORN MOUNTAINS WY-
954 PM MDT SUN JUL 31 2016
...SIGNIFICANT WEATHER ADVISORY...
AT 953 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 17 MILES SOUTHEAST OF LODGE
GRASS TO NEAR DAYTON...AND MOVING NORTHEAST AT 40 MPH.
WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS.
LOCATIONS IMPACTED INCLUDE...
SHERIDAN...RANCHESTER...
TONGUE RIVER RESERVOIR AND ROSEBUD BATTLEFIELD PARK.
THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS...FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.
LAT...LON 4474 10729 4524 10708 4533 10628 4518 10628
4518 10626 4499 10627 4499 10626 4475 10632
TIME...MOT...LOC 0353Z 246DEG 35KT 4520 10703 4484 10719
WALSHLocal storm report, Jul 31, 11:11 PM MDT, 1 hour 9 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BILLINGS MT
1111 PM MDT SUN JUL 31 2016
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1006 PM TSTM WND GST 2 SSW SHERIDAN 44.77N 106.97W
07/31/2016 M56.00 MPH SHERIDAN WY ASOS
0948 PM TSTM WND GST 18 ENE WARREN 45.13N 108.30W
07/31/2016 M51.00 MPH CARBON MT MESONET
0940 PM TSTM WND GST 9 NW RANCHESTER 45.00N 107.30W
07/31/2016 M51.00 MPH SHERIDAN WY DEPT OF HIGHWAYS
0900 PM TSTM WND GST 8 SSE WYOLA 45.03N 107.32W
07/31/2016 M54.00 MPH BIG HORN MT DEPT OF HIGHWAYS
0700 PM TSTM WND GST 3 WSW LOCKWOOD 45.79N 108.47W
07/31/2016 M62.00 MPH YELLOWSTONE MT DEPT OF HIGHWAYS
&&
BTSpecial weather statement, Jul 31, 11:25 PM MDT, 55 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BILLINGS MT 1125 PM MDT SUN JUL 31 2016 MTZ036-010630- POWDER RIVER MT- 1125 PM MDT SUN JUL 31 2016 ...SIGNIFICANT WEATHER ADVISORY FOR POWDER RIVER COUNTY... AT 1122 PM MDT...DOPPLER RADAR WAS TRACKING A LINE OF STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 14 MILES SOUTHWEST OF VOLBORG TO 25 MILES NORTH OF SPOTTED HORSE...AND MOVING NORTHEAST AT 25 MPH. WIND GUSTS UP TO 50 MPH ARE POSSIBLE WITH THESE STORMS ALONG WITH SOME DANGEROUS CLOUD TO GROUND LIGHTNING. LOCATIONS IMPACTED INCLUDE... BROADUS...BIDDLE...SONNETTE...MOORHEAD...BELLE CREEK...OLIVE... POWDERVILLE AND OTTER. PRECAUTIONARY/PREPAREDNESS ACTIONS... CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS. LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 4578 10500 4501 10510 4500 10626 4578 10612 TIME...MOT...LOC 0522Z 215DEG 19KT 4566 10581 4506 10603 TESAR
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 6:40 PM MDT | Special Weather Statement | BYZ | Yellowstone | 35 min |
| Jul 31, 7:43 PM MDT | Special Weather Statement | BYZ | Big Horn | 62 min |
| Jul 31, 8:39 PM MDT | Special Weather Statement | BYZ | Big Horn | 66 min |
| Jul 31, 11:25 PM MDT | Special Weather Statement | BYZ | Powder River | 65 min |
| Aug 1, 12:54 AM MDT | Special Weather Statement | BYZ | Carter | 66 min |
| Aug 1, 1:34 AM MDT | Special Weather Statement | BYZ | Carter | 41 min |
| Aug 1, 2:28 PM MDT | Fire Weather Watch | BYZ | Carbon, Gallatin, Madison, Park, Stillwater, Sweet Grass and 1 more | 13 hr |
| Aug 1, 2:28 PM MDT | Fire Weather Watch | BYZ | Carter, Custer, Fallon, Golden Valley, Musselshell, Rosebud and 2 more | 13 hr |
| Jul 31, 9:54 PM MDT | Special Weather Statement | BYZ | Sheridan | 66 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.