Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 85, NWS Billings, MT
NWS Billings, MT issued this severe thunderstorm warning at Jul 20, 2000, 5:06 PM MDT for Carter County, Montana. It was in force for 54 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
- Jul 20, 2000, 5:06 PM MDT (23:06 UTC)
- Expired
- Jul 20, 2000, 6:00 PM MDT
- In force
- 54 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Carter County, MT
The radar
The Rapid City radar (KUDX), 205 km from the middle of the area, began a volume at 23:07 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 (KUNR), launched 12:00Z, 11.1 hours before the alert went out and 207 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
- 323 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 480 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 93 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS55 KBYZ 202308
SVRBIL
MTC011-210000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BILLINGS MT
506 PM MDT THU JUL 20 2000
THE NATIONAL WEATHER SERVICE IN BILLINGS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHWESTERN CARTER COUNTY IN SOUTHEAST MONTANA
* UNTIL 600 PM MDT
* AT 506 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A SEVERE THUNDERSTORM 14 MILES NORTH OF HAMMOND...OR ABOUT 35
MILES SOUTHWEST OF EKALKA...MOVING SOUTH AT 20 MPH.
* THE SEVERE THUNDERSTORM WILL AFFECT...
BOYES BY 520 PM MDT
HAMMOND BY 530 PM MDT
$$
LAT...LON 4553 10470 4549 10499 4531 10505 4502 10504
#4501 10451What 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 20, 2:00 PM MDT, 3 hours 6 minutes earlier.
Area forecast discussion, Jul 20, 2:00 PM MDT, 3 hours 6 minutes before
SOUTH CENTRAL AND SOUTHEAST MONTANA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BILLINGS MT 200 PM MDT THU JUL 20 2000 .FRI AND SAT... KBLX RADAR DOWN ONCE AGAIN AND DOWN UNTIL FURTHER NOTICE. ETA/AVN MODEL SIMILAR IN SOLUTIONS YET AVN A BIT WARMER THAN ETA SO WILL COMPROMISE BETWEEN THE TWO. NORTHWEST FLOW CONTINUES ALOFT WITH SERIES OF UPPER LEVEL DISTURBANCES MOVING THROUGH THE FLOW TRIGGERING AFTN/EVE THUNDERSTORMS. STORMS ALREADY FIRING OVER PORTIONS OF BIL CWA AS SEEN PER SAT PICTURES...MAINLY OVER WHEATLAND COUNTY AND SHR COUNTY WY. SCT POPS SEEM BEST TIL RIDGE BEGINS TO SHIFT INTO W MT LATE FRIDAY AND THEN FURTHER INTO BIL CWA ON SAT. THUS WILL TREND TEMPS ON AN UPWARD SWING AS PER PREVIOUS FCST. WINDS WILL SHIFT TO THE SOUTH ALSO BRINGING LESS CLOUDS TO THE REGION GOING INTO THE WEEKEND. SPRINGER .SUN...MON...AND TUE... AS HAS BEEN THE PATTERN...SHORT TERM RIDGE WILL BREAK DOWN LATE ON SUNDAY WITH COOLER WESTERLY PATTERN PREVAILING FOR EARLY NEXT WEEK. SYSTEM THAT BREAKS DOWN THE RIDGE ON SUNDAY WILL BE FOLLOWED BY A SECOND PACIFIC SYSTEM WHICH WILL ENTER NORTHWEST BC AND TRACK SOUTHEAST TO SOUTHERN ALBERTA ON TUESDAY. AS DIFFLUENCE DEVELOPS IN ADVANCE OF THIS SYSTEM ON TUESDAY...THUNDERSTORMS LOOK LIKE A GOOD BET. BORSUM BIL BBTBT 057/090 060/095 062/095 062/090 060/085 543220 59 LVM BBTBT 058/088 058/092 061/093 061/089 059/084 543200 59 HDN BBTBT 057/092 058/095 062/097 061/091 059/086 543220 59 MLS BBTBT 059/090 062/095 061/095 063/090 061/085 543320 59 4BQ BBTBT 058/089 059/095 060/094 062/089 060/084 543320 59 BHK BBTBT 057/088 059/093 060/093 062/089 060/084 543320 59 SHR BBTBT 052/086 060/093 062/094 061/091 059/086 543320 59
The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 10:19 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 26 min |
| Jul 20, 4:13 PM MDT | Severe Thunderstorm Warning | BYZ | Custer, Fallon | 62 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.