Alert archive / Montana / Tornado Warnings in 2007
Tornado Warning 4, NWS Missoula, MT
NWS Missoula, MT issued this tornado warning at Jul 18, 2007, 7:59 PM MDT for Lake County, Montana. It was in force for 46 min. 9 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 18, 2007, 7:59 PM MDT (01:59 UTC)
- Expired
- Jul 18, 2007, 8:45 PM MDT
- In force
- 46 min
- Issued by
- NWS Missoula, MT
- Area
- Counties, with a storm outline in the text
County Lake County, MT
The radar
The Missoula radar (KMSX), 75 km from the middle of the area, began a volume at 02:01 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 |
|---|---|---|---|
| Jul 18, 8:00 PM MDT | TSTM WND DMG | 2 Sw Polson, MT | NWS STORM SURVEY TEAM FOUND FLAG POLE BENT OVER. MEDIUM SIZED TREES AND BRANCHES OBSERVED DOWN. ESTIMATED 80 TO 90 MPH WINDS. |
| Jul 18, 8:01 PM MDT | HAIL 1 | Polson, MT | UNSPECIFIED WIND DAMAGE AS WELL. |
| Jul 18, 8:05 PM MDT | TSTM WND DMG | 2 N Polson, MT | LARGE TREES AND LIMBS BLOWN DOWN ON ROCKY POINT ROAD...POSSIBLY TORNADO DAMAGE. ALSO PENNY SIZE HAIL COVERING THE GROUND 4 INCHES DEEP. |
| Jul 18, 8:05 PM MDT | TORNADO | 6 S Polson, MT | MANY TREES DOWN. ON TREE FELL THROUGH A HOME ROOF. |
| Jul 18, 8:06 PM MDT | TSTM WND DMG | 2 W Polson, MT | 16 INCH TREE DIAMETER SNAPPED, 3/4 INCH HAIL AS WELL. |
| Jul 18, 8:06 PM MDT | NON-TSTM WND DMG | 2 W Polson, MT | 16 INCH TREE DIAMETER SNAPPED, 3/4 INCH HAIL AS WELL. |
| Jul 18, 8:07 PM MDT | TORNADO | 5 N Polson, MT | PUBLIC NOTIFIED EMERGENCY MANAGEMENT OF AN OBSERVED WATERSPOUT OVER FLATHEAD LAKE. |
| Jul 18, 8:15 PM MDT | FUNNEL CLOUD | Polson, MT | OVER FLATHEAD LAKE. |
| Jul 18, 8:55 PM MDT | HAIL 1 | 4 W Pablo, MT |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 18, 7:18 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Spokane, WA (KOTX), launched 00:00Z, 2.0 hours before the alert went out and 167 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
- 114 J/kg
- Mixed-layer CIN
- -269 J/kg
- Mixed-layer LCL
- 1909 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 130 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS55 KMSO 190200 TORMSO MTC047-190245- /O.NEW.KMSO.TO.W.0004.070719T0159Z-070719T0245Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE MISSOULA MT 759 PM MDT WED JUL 18 2007 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * TORNADO WARNING FOR... LAKE COUNTY IN NORTHWEST MONTANA... * UNTIL 845 PM MDT. * AT 800 PM MDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO THIS TORNADO WAS LOCATED NEAR POLSON...AND WAS MOVING NORTHEAST AT 35 MPH. * THE TORNADO IS WILL BE NEAR... POLSON AROUND 810 PM MDT. IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A NEARBY REINFORCED BUILDING. AS A LAST RESORT...SEEK SHELTER IN A CULVERT...DITCH OR LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A STURDY SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4763 11444 4750 11426 4781 11374 4797 11397 $$
1 follow-up statement
000 WWUS55 KMSO 190220 SVSMSO SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 816 PM MDT WED JUL 18 2007 MTC047-190245- /O.CON.KMSO.TO.W.0004.000000T0000Z-070719T0245Z/ LAKE MT- 816 PM MDT WED JUL 18 2007 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM MDT FOR NORTHERN LAKE COUNTY... * AT 810 PM MDT...DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR FINLEY POINT...OR ABOUT 6 MILES NORTHEAST OF POLSON...AND WAS MOVING NORTHEAST AT 35 MPH. * THE TORNADO WILL BE NEAR... RURAL NORTHEASTERN LAKE COUNTY AROUND 830 PM MDT. *PUBLIC REPORTED A FUNNEL CLOUD OVER FLATHEAD LAKE NEAR POLSON. *ADDITIONALLY WINDS TO 60 MPH HAVE BEEN REPORTED WHICH HAVE BLOWN LARGE TREES OVER IN POLSON AREA. THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS AVAILABLE...SEEK SHELTER ON THE LOWEST FLOOR OF THE BUILDING IN AN INTERIOR HALLWAY OR ROOM SUCH AS A CLOSET. USE BLANKETS OR PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS. IF IN MOBILE HOMES OR VEHICLES...EVACUATE THEM AND GET INSIDE A SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS. LAT...LON 4763 11444 4750 11426 4781 11374 4797 11397 $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 6:19 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Sanders | 56 min |
| Jul 18, 7:28 PM MDT | Severe Thunderstorm Warning | MSO | Sanders | 9 min |
| Jul 18, 7:32 PM MDT | Tornado Warning | MSO | Lake, Sanders | 28 min |
| Jul 18, 8:24 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 51 min |
| Jul 18, 8:29 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 46 min |
| Jul 18, 8:38 PM MDT | Tornado Warning | MSO | Flathead, Lake | 52 min |
| Jul 18, 9:08 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 67 min |
| Jul 18, 9:10 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 50 min |
| Jul 18, 9:23 PM MDT | Flash Flood Warning | MSO | Flathead, Lincoln | 3 hr |
| Jul 18, 9:37 PM MDT | Severe Thunderstorm Warning | MSO | Sanders | 38 min |
| Jul 18, 10:07 PM MDT | Severe Thunderstorm Warning | MSO | Flathead | 38 min |
| Jul 18, 11:18 PM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 42 min |
| Jul 19, 12:16 AM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 29 min |
| Jul 19, 1:43 AM MDT | Severe Thunderstorm Warning | MSO | Lincoln | 32 min |
| Jul 19, 4:28 AM MDT | Red Flag Warning | MSO | Beaverhead, Deer Lodge, Granite, Jefferson, Madison, Powell and 1 more | 16 hr |
Nearby
Tornado Warnings in Montana, 2007Every tornado warning in 2007Tornadoes in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.