Alert archive / Idaho / Red Flag Warnings in 2021
Red Flag Warning 10, NWS Pocatello, ID
NWS Pocatello, ID issued this red flag warning at Jul 4, 2021, 2:56 AM MDT for 23 counties in Idaho. It took effect at Jul 4, 2021, 12:00 PM MDT. It was in force for 14 hr. 4 reports 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 4, 2021, 2:56 AM MDT (08:56 UTC)
- In effect from
- Jul 4, 2021, 12:00 PM MDT
- Expired
- Jul 5, 2021, 2:02 AM MDT
- In force
- 14 hr
- Issued by
- NWS Pocatello, ID
All 23 counties
Bannock County, ID, Bear Lake County, ID, Bingham County, ID, Blaine County, ID, Boise County, ID, Bonneville County, ID, Butte County, ID, Caribou County, ID, Cassia County, ID, Clark County, ID, Custer County, ID, Franklin County, ID, Fremont County, ID, Jefferson County, ID, Jerome County, ID, Lemhi County, ID, Lincoln County, ID, Madison County, ID, Minidoka County, ID, Oneida County, ID, Power County, ID, Teton County, ID, Twin Falls County, ID
The radar
The Pocatello radar (KSFX), 24 km from the middle of the area, began a volume at 08:55 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 4, 7:24 PM MDT | TSTM WND GST 56 | 6 S Twin Falls, ID | ASOS STATION KTWF TWIN FALLS. |
| Jul 4, 7:24 PM MDT | NON-TSTM WND GST 56 | 6 S Twin Falls, ID | ASOS STATION KTWF TWIN FALLS. |
| Jul 4, 7:35 PM MDT | TSTM WND GST 47 | 3 E Jerome, ID | AWOS STATION KJER JEROME COUNTY. |
| Jul 4, 7:35 PM MDT | NON-TSTM WND GST 47 | 3 E Jerome, ID | AWOS STATION KJER JEROME COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Boise Airport, ID (KBOI), launched 00:00Z, 8.9 hours before the alert went out and 269 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
- 260 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 3597 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- -4 m²/s²
- 0-3 km storm-relative helicity
- 11 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
775 WWUS85 KPIH 040856 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 256 AM MDT Sun Jul 4 2021 IDZ422-425-427-476-042100- /O.NEW.KPIH.FW.W.0010.210704T1800Z-210705T0500Z/ Sawtooth Range/Northern Sawtooth NF- Middle Snake River Valley/Twin Falls BLM north of the Snake River- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- Lemhi and Lost River Range/Challis NF- 256 AM MDT Sun Jul 4 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 11 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 422, 425, 427 AND 476... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from noon today to 11 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 422 Sawtooth Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River, Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for scattered thunderstorms means that critical fire weather conditions are expected for Southeastern Idaho with 25 percent or more coverage of thunderstorms, without specific rainfall criteria. && $$ IDZ410-411-413-042100- /O.NEW.KPIH.FW.W.0010.210704T2100Z-210705T0500Z/ Upper Snake River Valley/Idaho Falls BLM- Centennial Mountains and Snake River Range/Targhee NF- Caribou Range/Caribou NF- 256 AM MDT Sun Jul 4 2021 ...RED FLAG WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO 11 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 411 AND 413... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from 3 PM this afternoon to 11 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF and Fire Weather Zone 413 Caribou Range/Caribou NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for scattered thunderstorms means that critical fire weather conditions are expected for Southeastern Idaho with 25 percent or more coverage of thunderstorms, without specific rainfall criteria. && $$
3 follow-up statements
298 WWUS85 KPIH 042029 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 229 PM MDT Sun Jul 4 2021 IDZ422-425-427-476-050500- /O.CON.KPIH.FW.W.0010.000000T0000Z-210705T0500Z/ Sawtooth Range/Northern Sawtooth NF- Middle Snake River Valley/Twin Falls BLM north of the Snake River- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- Lemhi and Lost River Range/Challis NF- 229 PM MDT Sun Jul 4 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 422, 425, 427 AND 476... * AFFECTED AREA...Fire Weather Zone 422 Sawtooth Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River, Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for scattered thunderstorms means that critical fire weather conditions are expected for Southeastern Idaho with 25 percent or more coverage of thunderstorms, without specific rainfall criteria. && $$ IDZ410-411-413-050500- /O.CON.KPIH.FW.W.0010.210704T2100Z-210705T0500Z/ Upper Snake River Valley/Idaho Falls BLM- Centennial Mountains and Snake River Range/Targhee NF- Caribou Range/Caribou NF- 229 PM MDT Sun Jul 4 2021 ...RED FLAG WARNING REMAINS IN EFFECT UNTIL 11 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 411 AND 413... * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF and Fire Weather Zone 413 Caribou Range/Caribou NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for scattered thunderstorms means that critical fire weather conditions are expected for Southeastern Idaho with 25 percent or more coverage of thunderstorms, without specific rainfall criteria. && $$
056 WWUS85 KPIH 050429 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 1029 PM MDT Sun Jul 4 2021 IDZ422-425-427-476-051230- /O.EXT.KPIH.FW.W.0010.000000T0000Z-210706T0300Z/ Sawtooth Range/Northern Sawtooth NF- Middle Snake River Valley/Twin Falls BLM north of the Snake River- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- Lemhi and Lost River Range/Challis NF- 1029 PM MDT Sun Jul 4 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT MONDAY FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 422, 425, 427 AND 476... * AFFECTED AREA...Fire Weather Zone 422 Sawtooth Range/Northern Sawtooth NF, Fire Weather Zone 425 Middle Snake River Valley/Twin Falls BLM north of the Snake River, Fire Weather Zone 427 Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for scattered thunderstorms means that critical fire weather conditions are expected for Southeastern Idaho with 25 percent or more coverage of thunderstorms, without specific rainfall criteria. && $$ IDZ410-411-413-051230- /O.EXT.KPIH.FW.W.0010.000000T0000Z-210706T0300Z/ Upper Snake River Valley/Idaho Falls BLM- Centennial Mountains and Snake River Range/Targhee NF- Caribou Range/Caribou NF- 1029 PM MDT Sun Jul 4 2021 ...RED FLAG WARNING NOW IN EFFECT UNTIL 9 PM MDT MONDAY FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 411 AND 413... * AFFECTED AREA...Fire Weather Zone 410 Upper Snake River Valley/Idaho Falls BLM, Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF and Fire Weather Zone 413 Caribou Range/Caribou NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for scattered thunderstorms means that critical fire weather conditions are expected for Southeastern Idaho with 25 percent or more coverage of thunderstorms, without specific rainfall criteria. && $$
717 WWUS85 KPIH 050802 RFWPIH URGENT - FIRE WEATHER MESSAGE National Weather Service Pocatello ID 202 AM MDT Mon Jul 5 2021 IDZ411-413-476-060300- /O.CAN.KPIH.FW.W.0010.000000T0000Z-210706T0300Z/ /O.NEW.KPIH.FW.W.0011.210705T1800Z-210706T0300Z/ Centennial Mountains and Snake River Range/Targhee NF- Caribou Range/Caribou NF-Lemhi and Lost River Range/Challis NF- 202 AM MDT Mon Jul 5 2021 ...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS EVENING FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 411, 413 AND 476... The National Weather Service in Pocatello has issued a Red Flag Warning for scattered thunderstorms, which is in effect from noon today to 9 PM MDT this evening. * AFFECTED AREA...Fire Weather Zone 411 Centennial Mountains and Snake River Range/Targhee NF, Fire Weather Zone 413 Caribou Range/Caribou NF and Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF. * IMPACTS...Scattered thunderstorms may produce new fire starts. Gusty and erratic outflow winds may create hazardous fire weather conditions. * OUTFLOW WINDS...Gusts of 45 to 50 mph are possible near stronger storms. * THUNDERSTORMS... PRECAUTIONARY/PREPAREDNESS ACTIONS... A red flag warning for thunderstorms means that coverage of 25 percent or more is expected without specific rainfall criteria. && $$ IDZ410-422-425-427-050915- /O.CAN.KPIH.FW.W.0010.000000T0000Z-210706T0300Z/ Upper Snake River Valley/Idaho Falls BLM- Sawtooth Range/Northern Sawtooth NF- Middle Snake River Valley/Twin Falls BLM north of the Snake River- Goose Creek and Raft River Valley/Southern Sawtooth NF/Twin Falls BLM south of the Snake River- 202 AM MDT Mon Jul 5 2021 ...RED FLAG WARNING IS CANCELLED FOR SCATTERED THUNDERSTORMS FOR FIRE WEATHER ZONES 410, 422, 425 AND 427... The National Weather Service in Pocatello has cancelled the Red Flag Warning. $$
The office that day
Everything else NWS Pocatello, ID issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 6:38 PM MDT | Special Weather Statement | PIH | Power | 37 min |
| Jul 4, 3:01 AM MDT | Heat Advisory | PIH | Blaine, Cassia, Lincoln, Minidoka, Power | 18 hr |
| Jul 4, 3:48 PM MDT | Special Weather Statement | PIH | Jefferson | 42 min |
| Jul 4, 4:22 PM MDT | Special Weather Statement | PIH | Madison | 38 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.