Alert archive / Montana / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 117, NWS Glasgow, MT
NWS Glasgow, MT issued this severe thunderstorm warning at Jul 9, 2000, 6:40 PM MDT for McCone County, Montana. It was in force for 65 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
- Jul 9, 2000, 6:40 PM MDT (00:40 UTC)
- Expired
- Jul 9, 2000, 7:45 PM MDT
- In force
- 65 min
- Issued by
- NWS Glasgow, MT
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County McCone County, MT
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 7:00 PM MDT | Thunderstorm Wind 52 E | Circle, 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 |
|---|---|---|---|
| Jul 9, 5:30 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Glasgow Intl Airport, MT (KGGW), launched 00:00Z, 0.7 hours before the alert went out and 88 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
- 2043 J/kg
- Mixed-layer CIN
- -3 J/kg
- Mixed-layer LCL
- 950 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 262 m²/s²
- Significant tornado parameter
- 1.8
- Supercell composite
- 11.0
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 severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Glasgow, MT wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 9, 2:27 PM MDT, 4 hours 13 minutes earlier.
Area forecast discussion, Jul 9, 2:27 PM MDT, 4 hours 13 minutes before
NORTHEAST MONTANA AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GLASGOW MT 227 PM MDT SUN JUL 9 2000 DAY 9...OF THE SVR WX ACROSS NEMONT. YET ANOTHER IN THE SERIES OF SHORTWAVES WILL TRACK ACROSS THE REGION TONIGHT FOR YET ANOTHER ROUND OF SVR WX. KGGW AT 12Z HAD A FAVORABLE SOUNDING FOR FOR SVR TODAY. GOOD SHEAR PROFILE...ONLY NOTE IS THE THE WINDS WERE VEERING IN THE LOW LEVELS INSTEAD OF BACKING WITH HEIGHT...HOWEVER FORECAST SOUNDINGS SHOW A CHANGE IN THE LOW LEVELS BY THIS AFTERNOON. AT THE SFC...JUICY JUICY JUICY ACROSS THE CWFA...VIS PIX SHOWS SC DECK MOVING OUT OF THE REGION...HAVE TO CLUSTERS OF TSRA...ONE OVR BLAINE AND THE OTHER OVR MCCONE. THESE SHOULD CLEAR THE AREA. LOOKING AT H2O VAP...CAN SEE THE START OF THE NEXT BAND OF TSRA FOR TONIGHT OVR THE SW MTS. THE LOW LEVEL EASTERLIES WILL KICK IN AGAIN ACROSS THE ENTIRE CWFA...THIS WILL AIDE TSRA TO DEVELOP EVEN MORE...AND AGAIN SUPERCELLS ARE LIKELY FOR THE REGION. FOR MONDAY AND MONDAY NIGHT...FOLLOWED THE MESO-ETA CLOSELY FOR DETAILS. MODEL SOUNDINGS SHOW YET ANOTHER DAY OF SVR CONVECTION ACROSS THE CWFA. MODEL SOUNDINGS PRODUCE LI/S TO -9 WITH GOOD CAPES ACROSS THE REGION. PROTON EXTENDED...MODELS IN GOOD AGREEMENT WITH GENERAL FLOW PATTERN DURING THE EXTENDED PERIOD. WESTERLY FLOW ON WEDNESDAY WILL ONCE AGAIN SHIFT BACK TO THE SOUTHWEST FOR THURSDAY AND FRIDAY. THICKNESS RIDGE BEGINS TO BUILD OVER EASTERN MONTANA ON THURSDAY AND FRIDAY AS WELL. WILL TREND TEMPS UP A BIT AND KEEP MENTION OF THUNDERSTORMS EACH DAY. POHL GGW TTTTT 060/082 060/084 058/086 061/088 062/091 947363/87333 GDV TTTTT 061/083 061/085 061/089 m061/091 062/093 947474/87333
The office that day
Everything else NWS Glasgow, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 6:31 PM MDT | Flash Flood Warning | GGW | McCone | 6 hr |
| Jul 9, 6:54 PM MDT | Severe Thunderstorm Warning | GGW | Valley | 51 min |
| Jul 10, 3:47 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 58 min |
| Jul 10, 4:08 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 67 min |
| Jul 10, 4:43 PM MDT | Severe Thunderstorm Warning | GGW | Wibaux | 62 min |
| Jul 10, 5:11 PM MDT | Severe Thunderstorm Warning | GGW | Phillips | 64 min |
| Jul 10, 5:46 PM MDT | Tornado Warning | GGW | Valley | 59 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.