Alert archive / Montana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 52, NWS Billings, MT

June 26, 2001Big Horn County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 26, 2001, 9:25 PM MDT for Big Horn County, Montana. It was in force for 65 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jun 26, 2001, 9:25 PM MDT (03:25 UTC)
Expired: Jun 26, 2001, 10:30 PM MDT
In force: 65 min
Issued by: NWS Billings, MT
Area: Whole counties

County Big Horn County, MT

What was reported inside it

Time	Report	Where	Remark
Jun 26, 10:00 PM MDT	Thunderstorm Wind 80 E	Hardin, MT	80 mph thunderstorm wind gust...hay shed destroyed on Fly Creek Road

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The watch it was issued in

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

Issued	Product	Office	Lasted
Jun 26, 5:00 PM MDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Riverton, WY (KRIW), launched 00:00Z, 3.4 hours before the alert went out and 272 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 145 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 3130 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.4

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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 26, 8:35 PM MDT, 50 minutes earlier.

Area forecast discussion, Jun 26, 8:35 PM MDT, 50 minutes before

SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
835 PM MDT TUE JUN 26 2001

.WED AND THU...
STRONG THUNDERSTORMS IN AND NEAR YELLOWSTONE COUNTY HAVE PRODUCED
A VARIETY OF SEVERE WEATHER REPORTS INCLUDING TORNADOES AND LARGE
HAIL. ZONE UPDATES DELAYED INDEFINITELY. THORICHT

.FRI...SAT...SUN...MON...TUE...

HOT AND MAINLY DRY WEATHER WILL PREVAIL ACROSS THE AREA FRIDAY AND
SATURDAY AS THE UPPER LEVEL RIDGE AXIS REMAINS OVER MONTANA. WEAK
SHORTWAVES MOVING ACROSS THE AREA FRIDAY WILL ONLY PRODUCE ISOLATED
THUNDERSTORMS. A STRONGER WAVE WILL MOVE ACROSS THE AREA SUNDAY...
BRINGING THE BEST CHANCE FOR THUNDERSTORMS DURING THE EXTENDED PERIOD.
NORTHWEST FLOW PREVAILS MONDAY AND TUESDAY...BRINGING MAINLY DRY
WEATHER MONDAY AND DRY WEATHER TUESDAY. TEMPERATURES WILL BE COOLER
MONDAY AND TUESDAY. MIDDENDORF

    WED     THU     FRI     SAT     SUN     MON     TUE
-----------------------------------------------------------
BIL 062/091 059/090 060/089 062/093 062/093 058/082 053/082
    44/T    20/B    22/B    22/B    23/T    32/B    20/B
LVM 058/086 056/089 054/088 055/090 055/088 055/078 046/078
    34/T    20/B    22/B    22/B    23/T    32/B    20/B
HDN 060/094 057/092 058/091 060/094 060/094 059/085 050/085
    44/T    20/B    22/B    22/B    23/T    32/B    20/B
MLS 063/093 065/090 063/093 063/095 064/095 061/085 054/085
    24/T    30/B    22/B    22/B    23/T    32/B    20/B
4BQ 064/095 064/092 064/093 064/095 063/095 060/083 052/083
    24/T    30/B    22/B    22/B    23/T    32/B    20/B
BHK 061/092 061/092 061/093 061/095 062/093 060/081 050/081
    24/T    30/B    22/B    22/B    23/T    32/B    20/B
SHR 060/091 058/091 055/089 055/092 055/094 055/081 047/081
    44/T    20/B    22/B    22/B    23/T    32/B    20/B

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 7:28 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	62 min
Jun 26, 7:53 PM MDT	Tornado Warning	BYZ	Yellowstone	37 min
Jun 26, 8:10 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon, Stillwater	20 min
Jun 26, 8:25 PM MDT	Tornado Warning	BYZ	Musselshell, Yellowstone	35 min
Jun 26, 9:00 PM MDT	Tornado Warning	BYZ	Yellowstone	45 min
Jun 26, 9:10 PM MDT	Flash Flood Warning	BYZ	Yellowstone	2 hr
Jun 26, 9:45 PM MDT	Tornado Warning	BYZ	Yellowstone	45 min
Jun 26, 9:58 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	62 min
Jun 26, 11:17 PM MDT	Flash Flood Warning	BYZ	Yellowstone	58 min
Jun 27, 2:30 PM MDT	Severe Thunderstorm Warning	BYZ	Fallon	60 min
Jun 27, 2:55 PM MDT	Severe Thunderstorm Warning	BYZ	Custer	35 min
Jun 27, 3:29 PM MDT	Severe Thunderstorm Warning	BYZ	Custer, Fallon	61 min
Jun 27, 5:15 PM MDT	Severe Thunderstorm Warning	BYZ	Sheridan	35 min

Nearby

Severe Thunderstorm Warnings in Montana, 2001 Every severe thunderstorm warning in 2001

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.