Alert archive / Montana / Tornado Warnings in 2000
Tornado Warning 5, NWS Billings, MT
NWS Billings, MT issued this tornado warning at Aug 1, 2000, 3:46 PM MDT for Golden Valley County, Musselshell County, Montana. It was in force for 59 min. 2 reports 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, 3:46 PM MDT (21:46 UTC)
- Expired
- Aug 1, 2000, 4:45 PM MDT
- In force
- 59 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 1, 4:55 PM MDT | Hail 0.75 | Roundup, MT | |
| Aug 1, 4:55 PM MDT | Hail 1 | Roundup, 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 nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 9.8 hours before the alert went out and 178 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
- 38 J/kg
- Mixed-layer CIN
- -278 J/kg
- Mixed-layer LCL
- 2886 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 45 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KBYZ 012147 TORBIL MTC037-065-012245- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE BILLINGS MT 346 PM MDT TUE AUG 1 2000 THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN MUSSELSHELL COUNTY IN CENTRAL MONTANA NORTHERN GOLDEN VALLEY COUNTY IN CENTRAL MONTANA * UNTIL 445 PM MDT * AT 346 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A TORNADO OVER EXTREME NORTHWESTERN GOLDEN VALLEY COUNTY...OR ABOUT 28 MILES SOUTH OF LEWISTOWN...MOVING EAST AT 25 MPH. * THE TORNADO WILL REMAIN OVER MAINLY RURAL AREAS OF... NORTHERN GOLDEN VALLEY AND NORTHWESTERN MUSSELSHELLCOUNTIES. GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! $$ A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM MDT TUESDAY EVENING FOR SOUTHEASTERN MONTANA. LAT...LON 4677 10936 4651 10938 4643 10865 4673 10870
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Aug 1, 2:40 PM MDT, 1 hour 6 minutes earlier.
Area forecast discussion, Aug 1, 2:40 PM MDT, 1 hour 6 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BILLINGS MT 240 PM MDT TUE AUG 01 2000 .WED AND THU... FOCUS ON THE NEAR SHORT TERM (I.E. TONIGHT/EARLY WEDNESDAY) WILL BE THE POTENTIAL FOR SEVERE STORMS OVER THE AREA. ISOLATED STORM OVER CARTER COUNTY HAS MOVED OUT INTO THE DAKOTAS. ELSEWHERE CONVECTION WAS POPPING UP OVER THE SOUTHWEST MOUNTAINS. COORDINATED WITH THE STORM PREDICTION CENTER ABOUT A SEVERE T-STORM WATCH AND DECISION MADE IS TO MONITOR FOR NEXT COUPLE HOURS. AN UPPER LOW WAS OVER SOUTHWEST CANADA WITH A COOL FRONT DRAPED ACROSS THE PACIFIC NORTHWEST THIS AFTERNOON. WEAK PRESSURE RISES WERE NOTED OVER WESTERN MONTANA THIS MORNING...HARD TO TELL IF THAT IS THE FRONT. THE 12Z ETA SEEMS TO HAVE A GOOD HANDLE ON THE SHORTWAVES ROUNDING THE TOP OF THE WARM UPPER HIGH OVER THE WEST. 6 HOUR PRESSURE TRENDS FORECAST BEHIND THE FRONT ON THE PLAINS WEDNESDAY INDICATE THEY ARE WEAKLY POSITIVE. FRONT WILL BE HARD TO TRACK (USUALLY THE CASE IN SUMMER) AND WILL PROBABLY BE A SLOW MOVER ACROSS OUR AREA. DO EXPECT T- STORM ACTION TO LAST INTO THE TONIGHT AND PERHAPS WEDNESDAY MORNING. THE FRONT TENDS TO WASH OUT IN THE PLAINS LATER WEDNESDAY AS THICKNESSES LOWER SOME THEN REBOUND THURSDAY. IN VIEW OF THE WATER VAPOR LOOP...A GOOD DEAL OF MOISTURE IS PRESENT IN THE MID/UPPER LEVELS WITH THE NORTHERN EXTENT OF IT OVER MONTANA. THE BOUNDARY LAYER IS SUBSTANTIALLY MOIST ACROSS OUR AREA TOO WITH DEWPOINTS INTO THE 50S AND LOWER 60S THIS AFTERNOON. INCREASED DYNAMIC FORCING SETTLES INTO OUR WESTERN AREA THIS EVENING. VISIBLE IMAGERY SHOWS SOME CIRRUS STREAKS OVER SOUTHWESTERN MONTANA INDICATIVE OF AN UPPER JET. "WET" THUNDERSTORMS WILL GENERATE THIS AFTERNOON...WITH MORE STORMS DEVELOPING EAST AS WE HEAD INTO THE EVENING AND NIGHT...AND WEDNESDAY MORNING. 12Z GLASGOW UPPER AIR SOUNDING SHOWS A PRECIPITABLE WATER AT 1.29". WITH DEEP LAYER SHEAR... SOUTHEAST SURFACE WINDS AND MODERATE TO HIGH CAPE VALUES...POTENTIAL IS THERE FOR STORMS TO BECOME SEVERE. THE 500MB HEIGHT RIDGE GETS SUPPRESSED A LITTLE WEDNESDAY SO WILL LOWER MAX TEMPS SOME...BUT STILL SHOULD REACH 90F. WILL KEEP ISOLATED CONVECTION GOING IN FORECAST FOR THE SOUTHEAST INTO THURSDAY WITH THE LEE SIDE TROUGH PRESENT. CANEPA .FRI...SAT...AND SUN... COOLING TREND WILL CONTINUE ACROSS THE AREA AS AN UPPER LEVEL TROF DEVELOPS OVER THE PACIFIC NORTHWEST. AREA WILL BE UNDER SOUTHWEST FLOW ALOFT...SO THERE WILL BE A CHANCE OF THUNDERSTORMS EACH DAY... ESPECIALLY ACROSS THE WESTERN ZONES. BIL BBTTT 062/090 063/091 063/095 060/090 060/087 643320 61 LVM BBTTT 057/090 058/090 058/090 055/088 055/083 643300 61 HDN BBTTT 060/093 060/094 060/097 058/092 057/089 643320 61 MLS BBBBB 065/094 065/095 065/098 063/092 063/090 644322 61 4BQ BBBBB 063/092 063/095 063/096 061/090 061/088 644322 61 BHK BBBBB 062/092 061/092 061/092 059/088 059/086 644322 61( SHR BBTTT 059/091 058/095 058/095 056/089 056/087 643322 61
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 12:32 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 58 min |
| Aug 1, 1:30 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 30 min |
| Aug 1, 4:44 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 61 min |
| Aug 1, 5:17 PM MDT | Severe Thunderstorm Warning | BYZ | Yellowstone | 58 min |
Nearby
Tornado Warnings in Montana, 2000Every tornado warning in 2000Tornadoes 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.