Alert archive / Montana / Red Flag Warnings in 2017
Red Flag Warning 8, NWS Missoula, MT
NWS Missoula, MT issued this red flag warning at Aug 24, 2017, 7:59 AM PDT for 5 counties in Idaho; 7 counties in Montana. It took effect at Aug 24, 2017, 2:00 PM PDT. It was in force for 8 hr. 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
- Aug 24, 2017, 7:59 AM PDT (14:59 UTC)
- In effect from
- Aug 24, 2017, 2:00 PM PDT
- Expired
- Aug 24, 2017, 10:09 PM PDT
- In force
- 8 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Latah County, ID, Lewis County, ID, Nez Perce County, ID, Beaverhead County, MT, Deer Lodge County, MT, Granite County, MT, Jefferson County, MT, Powell County, MT, Ravalli County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 97 km from the middle of the area, began a volume at 15:01 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 |
|---|---|---|---|
| Aug 24, 8:16 PM PDT | TSTM WND GST 40 | 1 Se Wise River, MT | MESONET STATION WRSM8, WISE RIVER RAWS. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 3.0 hours before the alert went out and 227 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
- 1 J/kg
- Mixed-layer CIN
- -245 J/kg
- Mixed-layer LCL
- 1881 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 54 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
427 WWUS85 KMSO 241459 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 859 AM MDT Thu Aug 24 2017 IDZ102-103-MTZ109-110-250600- /O.NEW.KMSO.FW.W.0008.170824T2100Z-170825T0600Z/ Palouse/Hells Canyon-Clearwater/Nez Perce-Bitterroot- Deerlodge/West Beaverhead- 859 AM MDT Thu Aug 24 2017 /759 AM PDT Thu Aug 24 2017/ ...RED FLAG WARNING IN EFFECT FROM 3 PM MDT /2 PM PDT/ THIS AFTERNOON TO MIDNIGHT MDT /11 PM PDT/ TONIGHT... * Affected area: Fire Zone 102 (Palouse/Hells Canyon)...South part....hells Canyon/Salmon River area. Fire Zone 103 (Clearwater/Nez Perce). Fire Zone 109 (Bitterroot). Fire Zone 110 (Deerlodge/West Beaverhead). * Impacts: Scattered dry and wet thunderstorms are expected to develop this afternoon and continue into the evening. Although some of the storms may be wet, the lightning and potential fire starts within an already saturated fire area will create a very serious impact. In addition, strong gusty winds and changing wind directions can be expected near any showers or storms. * Thunderstorms: The main lightning threat area will be from Hells Canyon eastward across the central Clearwaters, the Bitterroot, the Sapphires and Beaverhead...with the centerpoint of concern from Riggins to Hamilton to Deerlodge and Anaconda. * Outflow Winds: Gusty winds with changing wind directions can be expected under and around storms. Gust to 50 mph are expected with the stronger storms. && $$
1 follow-up statement
983 WWUS85 KMSO 250509 RFWMSO URGENT - FIRE WEATHER MESSAGE National Weather Service Missoula MT 1109 PM MDT Thu Aug 24 2017 IDZ102-103-MTZ109-110-250615- /O.CAN.KMSO.FW.W.0008.000000T0000Z-170825T0600Z/ Palouse/Hells Canyon-Clearwater/Nez Perce-Bitterroot- Deerlodge/West Beaverhead- 1109 PM MDT Thu Aug 24 2017 /1009 PM PDT Thu Aug 24 2017/ ...RED FLAG WARNING IS CANCELLED... The National Weather Service in Missoula has cancelled the Red Flag Warning. The thunderstorm threat has ended so the warning has been cancelled. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 4:08 PM PDT | Special Weather Statement | MSO | Idaho | 52 min |
Nearby
Red Flag Warnings in Montana, 2017Red Flag Warnings in Idaho, 2017Every red flag warning in 2017
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.