Alert archive / Idaho / Red Flag Warnings in 2011

Red Flag Warning 2, NWS Pocatello, ID

August 25, 20115 counties in Idaho

NWS Pocatello, ID issued this red flag warning at Aug 25, 2011, 3:25 AM MDT for 5 counties in Idaho. It took effect at Aug 25, 2011, 12:00 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 25, 2011, 3:25 AM MDT (09:25 UTC)
In effect from
Aug 25, 2011, 12:00 PM MDT
Expired
Aug 25, 2011, 8:04 PM MDT
In force
8 hr
Issued by
NWS Pocatello, ID

Counties Butte County, ID, Custer County, ID, Idaho County, ID, Lemhi County, ID, Valley County, ID

The radar

The Boise radar (KCBX), 194 km from the middle of the area, began a volume at 09:25 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, 9.4 hours before the alert went out and 186 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.

Skew-T log-pSkew-T log-p diagram, Boise Airport, ID at 00:00Z on 2011-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Boise Airport, ID at 00:00Z on 2011-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 1 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
5094 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
1 m²/s²
0-3 km storm-relative helicity
59 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

227 
WWUS85 KPIH 250925
RFWPIH

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
325 AM MDT THU AUG 25 2011

IDZ475-476-252200-
/O.UPG.KPIH.FW.A.0001.110825T1800Z-110826T0600Z/
/O.NEW.KPIH.FW.W.0002.110825T1800Z-110826T0600Z/
EAST SALMON RIVER MOUNTAINS/SALMON NF-
LEMHI AND LOST RIVER RANGE/CHALLIS NF-
325 AM MDT THU AUG 25 2011

...RED FLAG WARNING IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
TONIGHT FOR THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR
FIRE ZONES 475 AND 476...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS ISSUED A RED FLAG
WARNING...WHICH IS IN EFFECT FROM NOON TODAY TO MIDNIGHT MDT
TONIGHT. THE FIRE WEATHER WATCH IS NO LONGER IN EFFECT. 

* AFFECTED AREA: IN IDAHO...FIRE ZONE 475 EAST SALMON RIVER 
  MOUNTAINS/SALMON NATIONAL FOREST...FIRE ZONE 476 LEMHI AND 
  LOST RIVER RANGE/CHALLIS NATIONAL FOREST GENERALLY NORTH OF A 
  LINE FROM PASS CREEK SUMMIT TO LITTLE SOLDIER MOUNTAIN.

* TIMING: THURSDAY AFTERNOON AND EVENING.

* THUNDERSTORMS: WIDELY SCATTERED TO POSSIBLY SCATTERED IN 
  COVERAGE WITH RAINFALL AMOUNTS UNDER ONE TENTH OF AN INCH 
  ALTHOUGH LOCALLY HEAVY DOWNPOURS ARE POSSIBLE. GUSTY OUTFLOW 
  WINDS ARE ALSO POSSIBLE.

* IMPACTS: FUELS ARE CRITICAL IN MANY AREAS ESPECIALLY AT OR BELOW
  6000 FEET. ANY NEW LIGHTNING STARTS HAVE THE POTENTIAL FOR RAPID
  DEVELOPMENT AND SPREAD. EXISTING FIRE SITES... INCLUDING THE
  SADDLE FIRE COMPLEX COULD BE ADVERSELY AFFECTED.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$


HTTP://WEATHER.GOV/POCATELLO
2 follow-up statements
905 
WWUS85 KPIH 251928
RFWPIH

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
128 PM MDT THU AUG 25 2011

IDZ475-476-260600-
/O.CON.KPIH.FW.W.0002.000000T0000Z-110826T0600Z/
EAST SALMON RIVER MOUNTAINS/SALMON NF-
LEMHI AND LOST RIVER RANGE/CHALLIS NF-
128 PM MDT THU AUG 25 2011

...RED FLAG WARNING REMAINS IN EFFECT UNTIL MIDNIGHT MDT TONIGHT
FOR THUNDERSTORMS AND GUSTY OUTFLOW WINDS FOR FIRE ZONES 475 AND 
476...

* AFFECTED AREA: IN IDAHO...FIRE ZONE 475 EAST SALMON RIVER 
  MOUNTAINS/SALMON NF...FIRE ZONE 476 LEMHI AND LOST RIVER 
  RANGE/CHALLIS NF. 

* TIMING: THIS AFTERNOON AND EVENING.

* THUNDERSTORMS: WIDELY SCATTERED TO POSSIBLY SCATTERED IN 
  COVERAGE WITH RAINFALL AMOUNTS UNDER ONE TENTH OF AN INCH 
  ALTHOUGH LOCALLY HEAVY DOWNPOURS ARE POSSIBLE. GUSTY OUTFLOW 
  WINDS ARE ALSO POSSIBLE.

* IMPACTS: FUELS ARE CRITICAL IN MANY AREAS ESPECIALLY AT OR
  BELOW 6000 FEET. ANY NEW LIGHTNING STARTS HAVE THE POTENTIAL 
  FOR RAPID DEVELOPMENT AND SPREAD. EXISTING FIRE SITES... 
  INCLUDING THE SADDLE FIRE COMPLEX COULD BE ADVERSELY 
  AFFECTED. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A RED FLAG WARNING MEANS THAT CRITICAL FIRE WEATHER CONDITIONS
ARE EITHER OCCURRING NOW...OR WILL SHORTLY. A COMBINATION OF
STRONG WINDS...LOW RELATIVE HUMIDITY...AND WARM TEMPERATURES WILL
CREATE EXPLOSIVE FIRE GROWTH POTENTIAL.

&&

$$


HTTP://WEATHER.GOV/POCATELLO
092 
WWUS85 KPIH 260204
RFWPIH

URGENT - FIRE WEATHER MESSAGE
NATIONAL WEATHER SERVICE POCATELLO ID
804 PM MDT THU AUG 25 2011


IDZ475-476-260315-
/O.CAN.KPIH.FW.W.0002.000000T0000Z-110826T0600Z/
EAST SALMON RIVER MOUNTAINS/SALMON NF-
LEMHI AND LOST RIVER RANGE/CHALLIS NF-
804 PM MDT THU AUG 25 2011

...RED FLAG WARNING IS CANCELLED FOR THUNDERSTORMS AND GUSTY
OUTFLOW WINDS FOR FIRE ZONES 475 AND 476...

THE NATIONAL WEATHER SERVICE IN POCATELLO HAS CANCELLED THE RED
FLAG WARNING. 

THE THUNDERSTORM THREAT ACROSS THE CENTRAL MOUNTAINS HAS ENDED FOR
THIS EVENING. THEREFORE...THE WARNING IS BEING CANCELLED AT THIS
TIME. IT IS STILL POSSIBLE THAT A STORM COULD DEVELOP AND MOVE
THROUGH THE REGION OVERNIGHT...BUT THE CHANCE IS VERY LOW.  

$$


HTTP://WEATHER.GOV/POCATELLO

The office that day

Everything else NWS Pocatello, ID issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 24, 8:53 PM MDTFire Weather WatchPIHButte, Custer, Idaho, Lemhi, Valley7 hr
Aug 24, 9:26 PM MDTSpecial Weather StatementPIHBingham94 min
Aug 24, 10:26 PM MDTSpecial Weather StatementPIHBingham, Jefferson49 min
Aug 24, 10:52 PM MDTSevere Thunderstorm WarningPIHBingham, Bonneville, Jefferson23 min
Aug 24, 11:19 PM MDTSpecial Weather StatementPIHFremont, Madison41 min
Aug 25, 6:28 AM MDTSpecial Weather StatementPIHBingham47 min
Aug 25, 7:34 AM MDTSpecial Weather StatementPIHBonneville, Madison41 min

Nearby

Red Flag Warnings in Idaho, 2011Every red flag warning in 2011

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.