Alert archive / Montana / Tornado Warnings in 1999
Tornado Warning 9, NWS Billings, MT
NWS Billings, MT issued this tornado warning at Aug 14, 1999, 9:14 PM MDT for Wheatland County, Montana. It was in force for 61 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 14, 1999, 9:14 PM MDT (03:14 UTC)
- Expired
- Aug 14, 1999, 10:15 PM MDT
- In force
- 61 min
- Issued by
- NWS Billings, MT
- Area
- Whole counties
County Wheatland County, MT
The radar
The Billings radar (KBLX), 117 km from the middle of the area, began a volume at 03:14 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 |
|---|---|---|---|
| Aug 14, 9:15 PM MDT | Tornado F0 | Harlowton, MT | A driver on U.S. Highway 191 and an amateur radio operator reported a thin rope like tornado that was on the ground over rural areas for around 15 minutes. |
| Aug 14, 9:40 PM MDT | Hail 1 | Living Spgs, MT | Spotter report of quarter size hail. |
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 |
|---|---|---|---|
| Aug 14, 4:15 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Great_falls, MT (KTFX), launched 00:00Z, 3.2 hours before the alert went out and 125 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
- 13 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 1802 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 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 14, 8:30 PM MDT, 44 minutes earlier.
Area forecast discussion, Aug 14, 8:30 PM MDT, 44 minutes before
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</html>The office that day
Everything else NWS Billings, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 10:18 PM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 62 min |
| Aug 14, 10:34 PM MDT | Tornado Warning | BYZ | Musselshell | 36 min |
| Aug 15, 1:49 AM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley, Stillwater | 61 min |
| Aug 15, 2:38 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 62 min |
| Aug 15, 2:44 AM MDT | Tornado Warning | BYZ | Golden Valley | 51 min |
| Aug 15, 2:59 AM MDT | Severe Thunderstorm Warning | BYZ | Stillwater | 66 min |
| Aug 15, 3:18 AM MDT | Severe Thunderstorm Warning | BYZ | Golden Valley | 62 min |
| Aug 15, 3:46 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 59 min |
| Aug 15, 4:50 AM MDT | Severe Thunderstorm Warning | BYZ | Musselshell | 45 min |
| Aug 15, 5:48 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Aug 15, 6:03 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 47 min |
| Aug 15, 6:30 AM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 30 min |
| Aug 15, 6:48 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 62 min |
| Aug 15, 10:44 AM MDT | Severe Thunderstorm Warning | BYZ | Carbon | 31 min |
| Aug 15, 10:53 AM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 47 min |
| Aug 15, 11:07 AM MDT | Tornado Warning | BYZ | Yellowstone | 48 min |
| Aug 15, 11:49 AM MDT | Severe Thunderstorm Warning | BYZ | Big Horn | 61 min |
| Aug 15, 12:30 PM MDT | Tornado Warning | BYZ | Rosebud | 30 min |
| Aug 15, 12:36 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 64 min |
| Aug 15, 12:45 PM MDT | Severe Thunderstorm Warning | BYZ | Treasure | 45 min |
| Aug 15, 12:56 PM MDT | Severe Thunderstorm Warning | BYZ | Rosebud | 59 min |
| Aug 15, 1:41 PM MDT | Severe Thunderstorm Warning | BYZ | Custer | 49 min |
| Aug 15, 1:56 PM MDT | Severe Thunderstorm Warning | BYZ | Powder River | 64 min |
| Aug 15, 2:26 PM MDT | Severe Thunderstorm Warning | BYZ | Carter | 64 min |
Nearby
Tornado Warnings in Montana, 1999Every tornado warning in 1999Tornadoes in 1999
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.