Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 201629
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1129 AM CDT FRI AUG 20 2010
VALID 201700Z - 211200Z
...NO CRITICAL AREAS...
...GREAT BASIN INTO WYOMING...
DRY AND BREEZY CONDITIONS WILL AFFECT MUCH OF THE GREAT BASIN INTO
WYOMING TODAY AS A SFC LOW DEVELOPS/STRENGTHENS OVER NEVADA IN
RESPONSE TO SHORTWAVE UPPER LEVEL RIDGING AHEAD OF APPROACHING PAC
NW TROF. SFC SUSTAINED WIND SPEEDS WILL GENERALLY REMAIN AOB 15 MPH
BUT LOCALIZED AREAS OF TERRAIN ENHANCED GUSTS TO 20-30 MPH MAY BE
POSSIBLE AT TIMES /SEE KCPR AND KRWL 15Z AND 16Z OBS/. AFTERNOON RH
VALUES WILL RANGE FROM THE SINGLE DIGITS OVER PORTIONS OF THE GREAT
BASIN TO THE TEENS OVER UTAH AND WYOMING.
NO CRITICAL AREAS ARE EXPECTED TODAY.
..STOPPKOTTE.. 08/20/2010
.PREV DISCUSSION... /ISSUED 0354 AM CDT FRI AUG 20 2010/
...SYNOPSIS...
A STRONG UPPER-LEVEL TROUGH WILL DEVELOP ALONG THE PACIFIC COAST
THROUGH THE PERIOD LEADING TO INCREASED MID- AND UPPER-LEVEL SWLY
FLOW OVER THE NWRN CONUS BY SATURDAY MORNING. IN RESPONSE TO THE
UPPER-LEVEL FLOW...SURFACE LOW PRESSURE WILL DEVELOP OVER THE NRN
INTERMOUNTAIN WEST...THOUGH INCREASED FLOW AT THE SURFACE LIKELY
WILL NOT BE REALIZED UNTIL SATURDAY AFTERNOON. IN THE SOUTHWEST AND
EAST OF THE ROCKIES...SUFFICIENT LOW-LEVEL MOISTURE AND/OR LIGHT
WINDS WILL LIMIT THE FIRE THREAT.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 201902
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0202 PM CDT FRI AUG 20 2010
VALID 211200Z - 221200Z
...CRITICAL FIRE WEATHER AREA FOR NERN CA...SERN ORE...NV...WRN
UT...SRN ID...SW MT...
...NERN CA...SERN ORE...MOST OF NV...FAR NWRN UT...SRN ID...SWRN
MT...
EXPANDED CRITICAL AREA AND JOIN THE NORTH AND SOUTH AREAS INTO ONE
AREA. GUSTY WINDS WILL BE WIDESPREAD SATURDAY WITH SUSTAINED WINDS
20-25 MPH WITH HIGHER GUSTS FROM THE ERN SLOPES OF THE SIERRAS INTO
SERN ORE EWD ACROSS MUCH OF NV INTO ERN ID AND SWRN MT. WHILE FUEL
CONDITIONS MAY BE SOMEWHAT MARGINAL IN SOME LOCATIONS /HIGHER
ELEVATIONS ESPECIALLY/...VERY DRY CONDITIONS WITH RH VALUES FROM THE
SINGLE DIGITS TO THE TEENS AND DAYTIME TEMPERATURES IN THE 80S AND
90S...WILL COMBINE WITH STRONG WINDS TO CREATE CRITICAL FIRE WEATHER
CONDITIONS. THE MAIN AREAS FOR CONCERN WILL BE THOSE THAT HAVE SEEN
RECENT DRY THUNDERSTORMS/LIGHTNING STRIKES AS WELL AS ONGOING/RECENT
FIRE ACTIVITY. SOME FORECAST MODELS INDICATE THAT VERY ISOLATED DRY
THUNDERSTORMS WILL BE POSSIBLE OVER SWRN MT NEAR THE ID/WY BORDER AS
WELL.
...WRN WA...NWRN ORE...NRN ID...NWRN MT...
WINDY CONDITIONS WILL DEVELOP AS UPPER TROF MOVES ONSHORE AND A COLD
FRONT BEGINS TO MOVE SEWD FROM WRN WA/ORE. TEMPERATURES WILL NOT BE
AS WARM AS THOSE FURTHER S AND E WITH HIGHS MAINLY IN THE 70S AND
80S...BUT RH VALUES WILL FALL INTO THE 15-25 PERCENT RANGE.
PERSISTENT DRY CONDITIONS COMBINED WITH MARGINAL FIRE WEATHER
CONDITIONS SHOULD PRIMARILY BE A CONCERN OVER AREAS WITH ONGOING
FIRES AND/OR RECENT DRY LIGHTNING STRIKES.
..STOPPKOTTE.. 08/20/2010
.PREV DISCUSSION... /ISSUED 0411 AM CDT FRI AUG 20 2010/
...SYNOPSIS...
AN UPPER-LEVEL TROUGH WILL MOVE ONSHORE IN THE PACIFIC NORTHWEST ON
SATURDAY WITH VERY STRONG WINDS ACCOMPANYING THE SYSTEM. AT THE
SURFACE...A LOW PRESSURE SYSTEM WILL STRENGTHEN OVER THE NRN
INTERMOUNTAIN WEST AND MOVE/DEVELOP NEWD INTO THE NRN ROCKIES.
ELSEWHERE...ABUNDANT LOW-LEVEL MOISTURE AND/OR LIGHT WINDS WILL
PREDOMINATE...LIMITING THE FIRE WEATHER THREAT.
...NERN CA...SERN ORE...NRN/CNTRL NV...
MID-LEVEL SWLY FLOW WILL INCREASE TO AOA 50 MPH OVER THIS REGION IN
RESPONSE TO THE APPROACHING TROUGH. AS THE BOUNDARY LAYER DEEPENS
INTO THE AFTERNOON...SUSTAINED SURFACE WINDS OVER 20 MPH WILL
DEVELOP. WITH A DRY AIRMASS IN PLACE...RH VALUES WILL FALL TO 10
PERCENT AS TEMPERATURES CLIMB INTO THE LOW-TO-MID 90S BY
AFTERNOON...LEADING TO CRITICAL FIRE WEATHER CONDITIONS.
...SERN ID...SWRN MT...
STRONG MID-LEVEL SWLY FLOW WILL MIX DOWN TO LOW LEVELS BY AFTERNOON
LEADING TO SUSTAINED SURFACE WINDS OVER 20 MPH. AS DAYTIME HEATING
OCCURS...RH VALUES SHOULD FALL BELOW 15 PERCENT LEADING TO CRITICAL
FIRE WEATHER CONDITIONS. IN ADDITION...THERE MAY BE SOME THREAT OF
ISOLATED DRY TSTMS OVER SWRN MT WITH THE DEVELOPMENT OF HIGH-BASED
STORMS.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...