Alert archive / Idaho / Red Flag Warnings in 2020
Red Flag Warning 13, NWS Pocatello, ID
NWS Pocatello, ID issued this red flag warning at Aug 13, 2020, 1:04 AM MDT for 9 counties in Idaho. It took effect at Aug 13, 2020, 1:00 PM MDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 13, 2020, 1:04 AM MDT (07:04 UTC)
- In effect from
- Aug 13, 2020, 1:00 PM MDT
- Expired
- Aug 13, 2020, 9:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Pocatello, ID
Counties Bingham County, ID, Bonneville County, ID, Butte County, ID, Clark County, ID, Fremont County, ID, Jefferson County, ID, Madison County, ID, Power County, ID, Teton County, ID
The radar
The Pocatello radar (KSFX), 77 km from the middle of the area, began a volume at 07:06 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
Riverton, WY (KRIW), launched 00:00Z, 7.1 hours before the alert went out and 307 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
- 4 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 3638 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 7 m²/s²
- 0-3 km storm-relative helicity
- 49 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
917 WWUS85 KPIH 130704 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 104 AM MDT Thu Aug 13 2020 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 410... IDZ410-132000- /O.UPG.KPIH.FW.A.0006.200813T1900Z-200814T0300Z/ /O.NEW.KPIH.FW.W.0013.200813T1900Z-200814T0300Z/ Upper Snake River Valley/Idaho Falls BLM- 104 AM MDT Thu Aug 13 2020 ...RED FLAG WARNING IN EFFECT FROM 1 PM THIS AFTERNOON TO 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 410... The National Weather Service in Pocatello has issued a Red Flag Warning for gusty winds and low relative humidity, which is in effect from 1 PM this afternoon to 9 PM MDT this evening. The Fire Weather Watch is no longer in effect. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM. * WINDS...Southwest 20 to 30 mph with gusts up to 40 mph. * RELATIVE HUMIDITY...As low as 10 percent. * IMPACTS...Any new or existing fires could spread rapidly due to the dry and breezy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies. && $$
2 follow-up statements
471 WWUS85 KPIH 132010 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 210 PM MDT Thu Aug 13 2020 IDZ410-140300- /O.CON.KPIH.FW.W.0013.000000T0000Z-200814T0300Z/ Upper Snake River Valley/Idaho Falls BLM- 210 PM MDT Thu Aug 13 2020 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 410... * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM. * WINDS...Southwest 20 to 30 mph with gusts up to 45 mph. * RELATIVE HUMIDITY...As low as 14 percent. * IMPACTS...Any new or existing fires could spread rapidly due to the dry and breezy conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning means that critical fire weather conditions are either occurring now, or will shortly based on these criteria for Southeastern Idaho: - Relative humidity at or below 15 percent and wind gusts of at least 25 mph in the mountains, or 30 mph in the Snake Plain. - Thunderstorm coverage of 25 percent, without specific rainfall criteria. - Other high impact events deemed critical by the National Weather Service and area fire management agencies. && $$
015 WWUS85 KPIH 140240 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 840 PM MDT Thu Aug 13 2020 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 410... IDZ410-140345- /O.EXP.KPIH.FW.W.0013.000000T0000Z-200814T0300Z/ Upper Snake River Valley/Idaho Falls BLM- 840 PM MDT Thu Aug 13 2020 ...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONE 410... Winds are slowly decreasing across the Upper Snake Plain this evening, with humidities hovering near or above 15 percent. With conditions improving over the next couple hours, we will go ahead and allow the warning to expire as scheduled. $$
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 6:02 PM MDT | Special Weather Statement | PIH | Bonneville | 43 min |
| Aug 13, 4:03 AM MDT | Lake Wind Advisory | PIH | Bannock, Bingham, Power | 15 hr |
Nearby
Red Flag Warnings in Idaho, 2020Every red flag warning in 2020
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.