Note: Fire weather probabilistic information in
PDF. Note: Starting June 25, 2013, the SPC will issue Experimental Dry Thunderstorm Fire
Weather Outlooks for Days 4 through 8 with individual web graphics.
Mouse over or click on the tabs above the graphic to view daily Day 3-8 Fire Weather Categorical Outlooks (D3-8 FW Categorical).
Scalloped areas (in Day3-8 graphics)/dashed areas (in individual day graphics) will indicate areas where the combination
of numerous cloud-to-ground lightning strikes, generally less than one-tenth inch of rain and dry fuels are forecast.
Please read the Product Description Document (PDD),
Public Information Notice (PNS),
and provide feedback using this link:
The experiment will end on July 30, 2013 and a decision will be made whether to proceed with testing,
revise the test, or continue on the path to operational production. Note: Starting on June 5, 2012 to January 30, 2013, SPC will issue Experimental Probabilistic
Fire Weather Dry Thunder and Strong Wind Outlooks for Day 3 to 8 with individual web graphics.
Mouse over or click on the tabs above the graphic to view daily Probabilistic Dry Thunder (DryT) and Strong Wind (Wind)
Fire Weather Outlooks.
Please read the
Product Description Document (PDD) and provide feedback using this link:
Rock Springs, WY...Green River, WY...Havre, MT...Rawlins, WY...
Fri, Jul 25, 2014 - Sat, Jul 26, 2014
Mon, Jul 28, 2014 - Tue, Jul 29, 2014
Sat, Jul 26, 2014 - Sun, Jul 27, 2014
Tue, Jul 29, 2014 - Wed, Jul 30, 2014
Sun, Jul 27, 2014 - Mon, Jul 28, 2014
Wed, Jul 30, 2014 - Thu, Jul 31, 2014
(All days are valid from 12 UTC - 12 UTC)
ZCZC SPCFWDD38 ALL
FNUS28 KWNS 232145
DAY 3-8 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0445 PM CDT WED JUL 23 2014
VALID 251200Z - 311200Z
AT THE BEGINNING OF THE EXTENDED PERIOD...AN UPPER-LEVEL LOW WILL
MOVE EWD ACROSS THE SOUTHERN CANADIAN PRAIRIE PROVINCES...ACTING TO
DEAMPLIFY THE RIDGE OVER THE SRN ROCKIES. THROUGH THE LATTER HALF
OF THE EXTENDED PERIOD...THE UPPER-LEVEL PATTERN WILL BECOME MORE
AMPLIFIED WITH A RIDGE BUILDING OVER THE WEST WHILE A TROUGH DEEPENS
OVER THE ERN CONUS. THE PRIMARY FIRE WEATHER CONCERNS DURING THE
EXTENDED PERIOD WILL BE DRY AND WINDY CONDITIONS ACROSS CENTRAL
WY/MT AS THE UPPER LOW PASSES TO THE NORTH AND A WARMING/DRYING
TREND FOR THE PACIFIC NORTHWEST.
...STRONG WIND/LOW RH POTENTIAL...
ENHANCED FLOW ASSOCIATED WITH THE AFOREMENTIONED UPPER LOW WILL
RESULT IN CONTINUED BREEZY SURFACE CONDITIONS FROM PORTIONS OF THE
GREAT BASIN INTO WY AND MT ON FRIDAY /D3/. GIVEN THE DRY AIRMASS
OVER THE REGION...BOUNDARY-LAYER MIXING WILL LEAD TO CRITICAL RH
VALUES AND ELEVATED FIRE WEATHER CONCERNS DURING THE AFTERNOON. THE
JUXTAPOSITION OF CRITICAL WINDS AND RH ON FRIDAY /D3/ APPEARS MOST
LIKELY OVER PORTIONS OF NCNTRL MT AND SCNTRL WY. ENHANCED MIDLEVEL
FLOW IN THE WAKE OF THE UPPER LOW WILL LINGER OVER WY/MT ON SATURDAY
/D4/...LEADING TO ANOTHER DAY OF DRY AND BREEZY CONDITIONS OVER SRN
...DRY THUNDERSTORM POTENTIAL...
AS AN UPPER-LEVEL RIDGE AMPLIFIES OVER THE WEST...WARMING AND DRYING
WILL OCCUR OVER THE PACIFIC NORTHWEST. FOLLOWING THIS PERIOD ON
SUNDAY /D5/...MODELS/ENSEMBLES ARE IN DECENT AGREEMENT WITH THE
APPROACH OF A SHORTWAVE TROUGH TOWARD THE CA/ORE COAST.
DESTABILIZATION AHEAD OF THIS FEATURE IN THE PRESENCE OF
DEEP/WELL-MIXED BOUNDARY LAYERS WILL SUPPORT THE POTENTIAL FOR
ISOLATED DRY THUNDERSTORMS OVER NRN CA/WRN ORE. ALTHOUGH THE
POTENTIAL FOR ISOLATED DRY THUNDERSTORMS MAY EXIST BEYOND SUNDAY
/D5/ ACROSS THE PACIFIC NORTHWEST AND NRN INTERMOUNTAIN
WEST/ROCKIES...PREDICTABILITY IS TOO LOW TO HIGHLIGHT AREAS AT THIS
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
CLICK TO GET FNUS38 KWNS PFWF38 FIRE WEATHER OUTLOOK DAY 3-8 AREAL OUTLINE PRODUCT