Fire Weather Outlook Discussion
Issued by NWS

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
000
FNUS22 KWNS 271709
FWDDY2

DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1208 PM CDT MON JUL 27 2015

VALID 281200Z - 291200Z

...NRN CALIFORNIA...SW ORE...
MOST RECENT GUIDANCE CONTINUES TO SUGGEST A MODERATE OFFSHORE
GRADIENT -- ABOUT 10MB FROM STS TO BNO AND 8 FROM STS TO MFR --
ACROSS THE REGION. HIGHEST POTENTIAL FOR ELEVATED FIRE WEATHER
CONDITIONS WILL BE ACROSS THE WRN FOOTHILLS OF THE NRN SIERRA...THE
SISKIYOUS...AND THE COASTAL RANGES FROM 12Z-15Z ON TUESDAY MORNING
WHEN GUSTY WINDS WILL OVERLAP POOR OVERNIGHT RECOVERY.

...SRN WY AND WRN NEB PANHANDLE...
WLY WINDS NEAR 20 MPH ARE EXPECTED DURING THE AFTERNOON WHEN DEEP
MIXING AND A DRY AIRMASS WILL SUPPORT MIN RH VALUES AROUND 15
PERCENT DESPITE GENERALLY BELOW-AVERAGE TEMPERATURES. AS A
RESULT...ELEVATED FIRE WEATHER CONDITIONS ARE STILL EXPECTED. ONLY
CHANGE TO THE PREVIOUS OUTLOOK AREA WAS A MINOR EWD EXPANSION OF THE
RISK AREA ACROSS THE NEB PANHANDLE.

..MOSIER.. 07/27/2015

.PREV DISCUSSION... /ISSUED 0359 AM CDT MON JUL 27 2015/

...SYNOPSIS...
THE VIGOROUS NORTHERN PLAINS MID/UPPER SYSTEM WILL CONTINUE TO MAKE
STEADY EASTWARD PROGRESS INTO THE UPPER MISSISSIPPI VALLEY REGION ON
D2/TUE...RELAXING THE GEOPOTENTIAL GRADIENT ACROSS PARTS OF THE
INTERMOUNTAIN WEST IN ITS WAKE.  A STRONG SURFACE CYCLONE ASSOCIATED
WITH THIS SYSTEM WILL MOVE NORTHEASTWARD INTO SOUTH-CENTRAL
CANADA...WHILE AN AREA OF HIGH PRESSURE AND A RELATIVELY COOLER/MORE
MOIST AIRMASS SETTLES INTO THE NORTHERN ROCKIES.  ELSEWHERE...AN
UPPER RIDGE WILL PERSIST ACROSS THE SOUTHERN PLAINS AND A TROUGH
WILL MOVE EASTWARD ACROSS THE NORTHEASTERN CONUS.

...WYOMING AND FAR WESTERN NEBRASKA...
RELATIVELY STRONG WESTERLY FLOW WILL REMAIN IN PLACE ACROSS THIS
AREA AS THE MID-LEVEL SYSTEM LIFTS AWAY FROM THIS REGION THROUGHOUT
THE DAY.  INSOLATION WILL RESULT IN TEMPERATURES WARMING INTO THE
LOW 70S F...WHILE ALSO ALLOWING THE VERTICAL MIXING OF STRONGER FLOW
ALOFT TO THE SURFACE...RESULTING IN 10-15 MPH WESTERLY SURFACE FLOW
WITH A FEW HIGHER GUSTS.  AFTERNOON RH VALUES ARE EXPECTED TO FALL
TO NEAR 10 PERCENT ALSO.  GIVEN DRY FUELS AND THE LACK OF ANTECEDENT
RAINFALL...AFOREMENTIONED PARAMETERS SUGGEST AN ELEVATED FIRE
WEATHER THREAT IN THE AREA...WITH SOME LOCALLY CRITICAL CONDITIONS
POSSIBLE FOR BRIEF PERIODS IN THE AFTERNOON.

...NORTHERN CALIFORNIA...
AS HIGH PRESSURE SETTLES INTO PARTS OF THE INTERMOUNTAIN WEST...
A MODERATE OFFSHORE GRADIENT WILL DEVELOP ACROSS PARTS OF THE
REGION.  THIS GRADIENT WILL LIKELY RESULT IN GUSTY WINDS ACROSS THE
HIGHER ELEVATIONS AND PASSES EARLY D2/TUE.  AN ELEVATED FIRE WEATHER
THREAT AREA HAS BEEN INCLUDED IN THIS AREA TO ADDRESS THIS THREAT.

...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.