Red Flag Warning 15, NWS Pocatello, ID

Issued

Jul 11, 2021, 3:11 AM MDT (09:11 UTC)

In effect from

Jul 11, 2021, 12:00 PM MDT

Expired

Jul 11, 2021, 9:00 PM MDT

In force

9 hr

Issued by

NWS Pocatello, ID

Counties Bingham County, ID, Blaine County, ID, Bonneville County, ID, Butte County, ID, Clark County, ID, Custer County, ID, Fremont County, ID, Idaho County, ID, Jefferson County, ID, Jerome County, ID, Lemhi County, ID, Lincoln County, ID, Madison County, ID, Minidoka County, ID, Power County, ID, Teton County, ID, Valley County, ID

The Pocatello radar (KSFX), 88 km from the middle of the area, began a volume at 09:13 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.

271 
WWUS85 KPIH 110911
RFWPIH

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pocatello ID
311 AM MDT Sun Jul 11 2021

IDZ410-425-475-476-120300-
/O.UPG.KPIH.FW.A.0005.210711T1800Z-210712T0300Z/
/O.NEW.KPIH.FW.W.0015.210711T1800Z-210712T0300Z/
Upper Snake River Valley/Idaho Falls BLM-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
East Salmon River Mountains/Salmon NF-
Lemhi and Lost River Range/Challis NF-
311 AM MDT Sun Jul 11 2021

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO 9 PM MDT THIS
EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE
WEATHER ZONES 410, 425, 475 AND 476...

The National Weather Service in Pocatello has issued a Red Flag
Warning for gusty winds and low relative humidity, which is in
effect from noon today 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Watch is no longer in effect.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, Fire Weather Zone 425 Middle Snake 
  River Valley/Twin Falls BLM north of the Snake River, Fire 
  Weather Zone 475 East Salmon River Mountains/Salmon NF and 
  Fire Weather Zone 476 Lemhi and Lost River Range/Challis NF.

* WINDS...West 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...As low as 10 percent.

* IMPACTS...Gusty winds and low humidity may create hazardous 
  fire weather conditions.

* HAINES INDEX...6

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.

&&

$$

372 
WWUS85 KPIH 120249
RFWPIH

URGENT - FIRE WEATHER MESSAGE
National Weather Service Pocatello ID
849 PM MDT Sun Jul 11 2021

...Red Flag Warning Expires...

IDZ410-425-475-476-120400-
/O.EXP.KPIH.FW.W.0015.000000T0000Z-210712T0300Z/
Upper Snake River Valley/Idaho Falls BLM-
Middle Snake River Valley/Twin Falls BLM north of the Snake River-
East Salmon River Mountains/Salmon NF-
Lemhi and Lost River Range/Challis NF-
849 PM MDT Sun Jul 11 2021

...RED FLAG WARNING WILL EXPIRE AT 9 PM MDT THIS EVENING FOR
GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 410,
425, 475 AND 476...

Wind across the affected area no longer has gusts to 25 mph, so
the Red Flag Warning will be allowed to expire.

$$

Messick

Red Flag Warnings in Idaho, 2021Every red flag warning in 2021

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.