Alert archive / Montana / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 101, NWS Billings, MT

August 1, 2000Rosebud County, Montana

NWS Billings, MT issued this severe thunderstorm warning at Aug 1, 2000, 1:30 AM MDT for Rosebud County, Montana. It was in force for 30 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
Aug 1, 2000, 1:30 AM MDT (07:30 UTC)
Expired
Aug 1, 2000, 2:00 AM MDT
In force
30 min
Issued by
NWS Billings, MT
Area
Whole counties

County Rosebud County, MT

What was reported inside it

TimeReportWhereRemark
Aug 1, 1:45 AM MDTThunderstorm Wind 60 MHathaway, MT60 mph thunderstorm wind gust resulting in a brief power outage

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 nearest sounding before it

Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 7.5 hours before the alert went out and 221 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 2000-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 502 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 00:00Z on 2000-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -7 square meters per square second.19395878Sfc1 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
502 J/kg
Mixed-layer CIN
-160 J/kg
Mixed-layer LCL
2334 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
-7 m²/s²
0-3 km storm-relative helicity
-17 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

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

000 
WUUS55 KBYZ 010732
SVRBIL
MTC087-010800-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
130 AM MDT TUE AUG 1 2000

THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL ROSEBUD COUNTY IN SOUTHEAST MONTANA

* UNTIL 200 AM MDT

* AT 130 AM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM WITH LARGE HAIL AND DAMAGING WINDS 3 MILES
  SOUTHEAST OF ROSEBUD...OR ABOUT 13 MILES EAST OF FORSYTH...MOVING
  SOUTHEAST AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF...
  EASTERN ROSEBUD COUNTY.

* THIS WARNING REPLACES THE EARLIER WARNING FOR NORTHEAST ROSEBUD    
  COUNTY.
$$

LAT...LON 4628 10619 4643 10640 4636 10656 4600 10620

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, 8:41 PM MDT, 4 hours 49 minutes earlier.

Area forecast discussion, Jul 31, 8:41 PM MDT, 4 hours 49 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BILLINGS MT
841 PM MDT MON JUL 31 2000

.TUE AND WED...
SHORTWAVES MOVING THROUGH AND AROUND UPPER RIDGE THIS EVENING...CAUSING
SCATTERED THUNDERSTORMS. ONE WAVE CAUSING THUNDERSTORMS OVER SOUTHWEST
MONTANA JUST NOW ENTERING OUR WESTERN ZONES. ANOTHER WAVE TRIGGERING
LINE OF ACTIVITY JUST MOVING SOUTHEAST INTO BILLINGS AREA. ETA PICKED UP
WELL ON THIS WAVE LAST NIGHT AS WELL AS CURRENT RUN. WEAK BACK DOOR
TROUGH THAT BACKED IN LAST NIGTH AND HIGH PRESSURE IN DAKOTAS HAS
ALLOWED EASTERLY WIND TO BRING SOME LOW LEVEL MOISTURE INTO AREA WITH
DEWPOINTS AROUND 50...AS WELL AS DIRECTIONAL SHEAR WITH WEAK MESO-
CYCLONES IN SOME ACTIVITY TONIGHT. BEST INSTABILITY IN SOUTHEAST
COUNTIES THIS EVENING. WAVE FAIRLY STRONG SO THINK ACTIVITY WILL GO
BEYOND "EVENING" HOURS UNTIL AROUND MIDNIGHT. WILL REWORD ZONES TO
REFLECT SLIGHTLY LONGER PERIOD CHANCE FOR THUNDERSTORMS. THUNDERSTORMS
NOT TOO WET...BUT ARE PRODUCING MORE RAIN THAN PREVIOUS NIGHTS WITH MORE
LEVEL MOISTURE. WILL UPDATE POPS IN FROM BILLINGS WEST A BIT TO REFLECT
INCREASED MOISTURE. RASCH

.THU...FRI...AND SAT...

RIDGE REBOUNDS A BIT THURSDAY AND FRIDAY AFTER THE FRONTAL PASSAGE
TUESDAY NIGHT AND WEDNESDAY. I EXPECT A CHANCE FOR THUNDERSTORMS
FRIDAY EVENING AS A CANADIAN COLD FRONT TRACKS ACROSS THE AREA FROM THE
NORTH. SATURDAY WILL BE DRY WITH NORMAL TEMPERATURES. MIDDENDORF

BIL GBGTB 064/099 063/092 063/095 063/095 060/090 563220 61
LVM GBGTB 056/096 058/088 058/090 058/090 055/088 563220 61
HDN GBGTB 062/100 060/094 060/097 060/097 058/092 563220 61
MLS GBGTB 067/100 065/095 065/098 065/098 063//092 561120 61
4BQ GBGTB 065/099 063/093 063/096 063/096 061/090 561120 61
BHK GBGTB 062/098 061/091 061/092 061/092 059/088 561120 61
SHR GBGTB 060/099 058/092 058/095 058/095 058/089 561120 61

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 12:32 AM MDTSevere Thunderstorm WarningBYZRosebud58 min
Aug 1, 3:46 PM MDTTornado WarningBYZGolden Valley, Musselshell59 min
Aug 1, 4:44 PM MDTSevere Thunderstorm WarningBYZMusselshell61 min
Aug 1, 5:17 PM MDTSevere Thunderstorm WarningBYZYellowstone58 min

Nearby

Severe Thunderstorm Warnings in Montana, 2000Every severe thunderstorm warning in 2000

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.