Alert archive / Idaho / Red Flag Warnings in 2021
Red Flag Warning 22, NWS Pocatello, ID
NWS Pocatello, ID issued this red flag warning at Jul 27, 2021, 2:05 AM MDT for 4 counties in Idaho. It took effect at Jul 27, 2021, 2:00 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
- Jul 27, 2021, 2:05 AM MDT (08:05 UTC)
- In effect from
- Jul 27, 2021, 2:00 PM MDT
- Expired
- Jul 27, 2021, 10:00 PM MDT
- In force
- 8 hr
- Issued by
- NWS Pocatello, ID
Counties Custer County, ID, Idaho County, ID, Lemhi County, ID, Valley County, ID
The radar
The Boise radar (KCBX), 198 km from the middle of the area, began a volume at 08:04 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
Boise Airport, ID (KBOI), launched 00:00Z, 8.1 hours before the alert went out and 189 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
- 76 J/kg
- Mixed-layer CIN
- -379 J/kg
- Mixed-layer LCL
- 3421 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 196 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
341 WWUS85 KPIH 270805 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 205 AM MDT Tue Jul 27 2021 IDZ475-271615- /O.NEW.KPIH.FW.W.0022.210727T2000Z-210728T0400Z/ East Salmon River Mountains/Salmon NF- 205 AM MDT Tue Jul 27 2021 ...RED FLAG WARNING IN EFFECT FROM 2 PM THIS AFTERNOON TO 10 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONE 475... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from 2 PM this afternoon to 10 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 475 East Salmon River Mountains/Salmon NF. * IMPACTS...Scattered dry-thunderstorms may produce new fire starts as well as gusty and erratic winds. * OUTFLOW WINDS...Wind gusts of 30 to 40 mph are possible near thunderstorms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning means that critical fire weather conditions are expected to develop. && $$
2 follow-up statements
338 WWUS85 KPIH 271748 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 1148 AM MDT Tue Jul 27 2021 IDZ475-280400- /O.CON.KPIH.FW.W.0022.210727T2000Z-210728T0400Z/ East Salmon River Mountains/Salmon NF- 1148 AM MDT Tue Jul 27 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 10 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONE 475... * AFFECTED AREA...Fire Weather Zone 475 East Salmon River Mountains/Salmon NF. * IMPACTS...Scattered dry-thunderstorms may produce new fire starts as well as gusty and erratic winds. * OUTFLOW WINDS...Wind gusts of 30 to 40 mph are possible near thunderstorms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning means that critical fire weather conditions are expected to develop. && $$
948 WWUS85 KPIH 280407 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 1007 PM MDT Tue Jul 27 2021 IDZ475-280515- /O.EXP.KPIH.FW.W.0022.000000T0000Z-210728T0400Z/ East Salmon River Mountains/Salmon NF- 1007 PM MDT Tue Jul 27 2021 ...RED FLAG WARNING HAS EXPIRED FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONE 475... Thunderstorm activity has ended across the East Salmon River Mountain region. Therefore the Red Flag Warning has been allowed to expire. Showers and thunderstorms are expected each day for the rest of the week, with locally heavy rainfall possible. $$
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 27, 3:05 PM MDT | Flash Flood Warning | PIH | Cassia | 3 hr |
| Jul 27, 3:31 PM MDT | Special Weather Statement | PIH | Bear Lake | 44 min |
| Jul 27, 4:12 PM MDT | Special Weather Statement | PIH | Bear Lake | 48 min |
| Jul 27, 4:32 PM MDT | Flash Flood Warning | PIH | Bear Lake, Franklin | 115 min |
Nearby
Red Flag Warnings in Idaho, 2021Every red flag warning in 2021
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.