Click for Day 1 FireWX Areal Outline Product
ZCZC SPCFWDDY1 ALL
FNUS21 KWNS 131629
DAY 1 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
1129 AM CDT TUE JUL 13 2010
VALID 131700Z - 141200Z
...CRITICAL FIRE WEATHER AREA FOR MUCH OF WY...
FORECAST ON TRACK...NO APPRECIABLE CHANGES NEEDED.
..SMITH.. 07/13/2010
.PREV DISCUSSION... /ISSUED 0236 AM CDT TUE JUL 13 2010/
...SYNOPSIS...
WINDS WILL INCREASE ACROSS THE NRN ROCKIES/NRN HIGH PLAINS AS A
VIGOROUS UPPER TROUGH MOVES ACROSS CANADA...RESULTING IN CRITICAL
FIRE WEATHER CONDITIONS OVER MUCH OF WY DUE TO STRONG WINDS AND LOW
RH. A SFC TROUGH WILL BECOME SITUATED ACROSS THE NRN/CNTRL HIGH
PLAINS WITH AN ATTENDANT COLD FRONT EXTENDING INTO THE CNTRL GREAT
BASIN. A SUBTROPICAL UPPER RIDGE WILL AGGRANDIZE AND BECOME CENTERED
OVER THE S CNTRL CONUS IN THE WAKE OF A SHORTWAVE UPPER TROUGH
MOVING TOWARDS THE MID-ATLANTIC REGION.
...MUCH OF WY...
A VERY STRONG MID-LEVEL JET /SAMPLED AT AROUND 70 KTS AT 500 MB PER
00Z UIL/OTX RAOBS/ ASSOCIATED WITH A CANADIAN UPPER LOW WILL SHIFT
EWD INTO MT AND NRN WY. A SFC COLD FRONT WILL PROGRESS TOWARDS THE
SE AS A SFC LOW/TROUGH BECOMES CENTERED OVER ERN WY. AHEAD OF THIS
FEATURE...THE BOUNDARY LAYER WILL BECOME VERY WELL-MIXED AS
TEMPERATURES HEAT INTO THE 80S/90S ACROSS THE LOWER ELEVATION
BASINS...ALLOWING FOR AFTERNOON RH VALUES IN THE LOWER TO MID TEENS
TO DEVELOP. AS STRONGER WINDS BEGIN TO MIX DOWN TO THE SFC AND THE
PRESSURE GRADIENT INCREASES...SUSTAINED WLY WINDS OF 20-25/GUSTS
35-45 MPH APPEAR LIKELY TO DEVELOP...RESULTING IN CRITICAL FIRE
WEATHER CONDITIONS ACROSS MUCH OF WY.
...NRN NV...SWRN ID...
MODERATELY STRONG MID-LEVEL FLOW WILL REMAIN POSITIONED ACROSS THE
REGION AS THE BASE OF A CANADIAN UPPER TROUGH PASSES TO THE N.
SUSTAINED WNWLY OF 15-20 MPH WILL DEVELOP AS A DRY COLD FRONT MOVES
SWD AND A WEAK SFC LOW DEEPENS OVER SWRN UT. NEAR CRITICAL TO
LOCALLY CRITICAL CONDITIONS MAY OCCASIONALLY BE
OBSERVED...PARTICULARLY OVER NRN NV...BUT THE COMBINATION OF
MARGINALLY LOW RH AND SUSTAINED WIND SPEEDS GENERALLY UNDER 20 MPH
WILL PRECLUDE A MORE SIGNIFICANT FIRE WEATHER THREAT FROM
DEVELOPING.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...
Click for Day 2 FireWX Areal Outline Product
ZCZC SPCFWDDY2 ALL
FNUS22 KWNS 131832
DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0132 PM CDT TUE JUL 13 2010
VALID 141200Z - 151200Z
...NO CRITICAL AREAS...
FORECAST ON TRACK...NO CHANGES NEEDED.
..SMITH.. 07/13/2010
.PREV DISCUSSION... /ISSUED 0338 AM CDT TUE JUL 13 2010/
...SYNOPSIS...
A POWERFUL CANADIAN UPPER LOW WILL CONTINUE TO PROGRESS EWD INTO
MANITOBA...AS A TRAILING SHORTWAVE UPPER TROUGH MOVES THROUGH THE
INTER-MOUNTAIN WEST. A BELT OF STRONG MID-LEVEL FLOW WILL EXTEND
FROM NRN UT INTO THE NRN PLAINS...RESULTING IN WINDY CONDITIONS
ACROSS PORTIONS OF WY AND MT/ND. AN EXPANSIVE SUB-TROPICAL UPPER
RIDGE WILL BECOME CENTERED OVER THE SRN PLAINS...YIELDING HOT
TEMPERATURES ACROSS MUCH OF THE SRN HALF OF THE NATION. THE
POTENTIAL FOR THUNDERSTORMS WILL EXIST FROM THE DESERT SOUTHWEST AND
CNTRL PLAINS INTO THE UPPER MIDWEST...AND OVER THE ERN CONUS.
...S CNTRL WY...
A BELT OF STRONG MID-LEVEL FLOW /50-60 KTS AT 500 MB/ EXTENDING FROM
THE BASE OF THE CANADIAN UPPER LOW WILL REMAIN POSITIONED OVER
WY...AS A SHORTWAVE UPPER TROUGH SHIFTS EWD ACROSS THE REGION. WITH
SFC HIGH PRESSURE BUILDING OVER THE PAC NW...AND THE BOUNDARY LAYER
BECOMING WELL-MIXED IN THE AFTERNOON...WLY WINDS OF AROUND 15-20 MPH
/GUSTS AS HIGH AS 40 MPH/ WILL DEVELOP ACROSS THE RED DESERT AND
BASIN FLOORS OF S CNTRL WY. DESPITE SOME COOLING IN THE BOUNDARY
LAYER COMPARED TO THE PREVIOUS DAY...THE AIR MASS WILL REMAIN
SUFFICIENTLY DRY TO YIELD MIN RH VALUES IN THE LOWER TO MID TEENS.
SUSTAINED WIND SPEEDS ARE EXPECTED TO REMAIN JUST BELOW CRITICAL
THRESHOLDS AT MANY LOCATIONS ACROSS S CNTRL WY...BUT LOCALIZED
CRITICAL CONDITIONS MAY STILL EXIST.
...PLEASE SEE WWW.SPC.NOAA.GOV/FIRE FOR GRAPHIC PRODUCT...