Alert archive / Montana / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 21, NWS Billings, MT

June 8, 2001Big Horn County, Rosebud County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Jun 8, 2001, 11:19 PM MDT for Big Horn County, Rosebud County, Montana. It was in force for 41 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 8, 2001, 11:19 PM MDT (05:19 UTC)
Expired: Jun 9, 2001, 12:00 AM MDT
In force: 41 min
Issued by: NWS Billings, MT
Area: Whole counties

Counties Big Horn County, MT, Rosebud County, MT

The radar

The Billings radar (KBLX), 116 km from the middle of the area, began a volume at 05:23 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.

What was reported inside it

Time	Report	Where	Remark
Jun 8, 11:45 PM MDT	Hail 0.88	Birney, MT

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 8, 8:15 PM MDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 5.3 hours before the alert went out and 269 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2589 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: -5 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS55 KBYZ 090520
SVRBIL

MTC003-087-090600-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
1119 PM MDT FRI JUN 8 2001

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN BIG HORN COUNTY IN SOUTH CENTRAL MONTANA
  SOUTHEASTERN ROSEBUD COUNTY IN SOUTHEAST MONTANA

* UNTIL MIDNIGHT MDT

* AT 1119 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS WITH LARGE HAIL AND DAMAGING WINDS... 
  ALONG A LINE EXTENDING FROM 40 MILES SOUTHEAST OF HARDIN TO 27     
  MILES NORTHEAST OF SHERIDAN...MOVING NORTHEAST AT 20 MPH.

* THE LINE OF SEVERE THUNDERSTORMS WILL REMAIN OVER MAINLY RURAL     
  AREAS OF...SOUTHERN ROSEBUD...SOUTHEASTERN BIG HORN...EASTERN BIG  
  HORN AND SOUTHEASTERN ROSEBUD COUNTIES.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE
FOR DAMAGING WINDS IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY
LIGHTNING.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 8, 6:16 PM MDT	Severe Thunderstorm Warning	BYZ	Wheatland	29 min
Jun 8, 7:12 PM MDT	Severe Thunderstorm Warning	BYZ	Carbon, Yellowstone	48 min
Jun 8, 7:57 PM MDT	Severe Thunderstorm Warning	BYZ	Big Horn, Yellowstone	63 min
Jun 8, 8:36 PM MDT	Severe Thunderstorm Warning	BYZ	Yellowstone	54 min
Jun 8, 11:16 PM MDT	Severe Thunderstorm Warning	BYZ	Powder River	44 min
Jun 9, 12:54 AM MDT	Severe Thunderstorm Warning	BYZ	Musselshell	66 min
Jun 9, 1:16 AM MDT	Severe Thunderstorm Warning	BYZ	Powder River	59 min
Jun 9, 3:14 AM MDT	Severe Thunderstorm Warning	BYZ	Rosebud	61 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; radar from the NEXRAD Level II archive.