Fire Weather Outlook Discussion
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FNUS22 KWNS 291935
FWDDY2

DAY 2 FIRE WEATHER OUTLOOK
NWS STORM PREDICTION CENTER NORMAN OK
0234 PM CDT FRI JUL 29 2016

VALID 301200Z - 311200Z

...CRITICAL FIRE WEATHER AREA FOR PORTIONS OF THE COLUMBIA BASIN...

NO CHANGES HAVE BEEN MADE TO THE EXISTING ELEVATED/CRITICAL
AREAS...WITH AT LEAST LOW-END CRITICAL CONDITIONS STILL EXPECTED
OVER PORTIONS OF THE COLUMBIA BASIN. SEE THE PREVIOUS DISCUSSION
BELOW FOR MORE DETAILS.

MEANWHILE...THE ISOLATED DRY THUNDERSTORM AREA HAS BEEN EXPANDED
SLIGHTLY ON THE NORTHERN AND WESTERN EDGES...BUT THE FORECAST
REASONING REMAINS UNCHANGED. THUNDERSTORM COVERAGE FROM NV/NRN UT
INTO ERN ID/SWRN MT/NWRN WY MAY SUPPORT AN UPGRADE IN SUBSEQUENT
OUTLOOKS IF CONFIDENCE IN THE DRYNESS OF THE TSTM ACTIVITY BECOMES
SUFFICIENT.

..DEAN.. 07/29/2016

.PREV DISCUSSION... /ISSUED 0253 AM CDT FRI JUL 29 2016/

...SYNOPSIS...
AN UPPER SHORTWAVE TROUGH WILL TRACK ACROSS THE PACIFIC NORTHWEST
AND NORTHERN ROCKIES ON SATURDAY. FALLING HEIGHTS AND INCREASED DEEP
LAYER WESTERLY FLOW ASSOCIATED WITH THE TROUGH WILL RESULT IN
INCREASING SURFACE WINDS AHEAD OF AN EASTWARD ADVANCING COLD FRONT.
WESTERLY SURFACE WINDS NEAR 20 MPH WITH SOME HIGHER GUSTS ARE
EXPECTED AS RH VALUES FALL TO AROUND 15-20 PERCENT. THESE WINDY/DRY
CONDITIONS IN COMBINATION WITH DRY FUELS WILL LEAD TO CRITICAL FIRE
WEATHER CONDITIONS. ELEVATED FIRE WEATHER CONDITIONS WILL EXTEND
FURTHER SOUTH THROUGH EASTERN OREGON INTO NORTHWEST NV AND FAR NE
CA. WIND SPEEDS WILL BE SOMEWHAT WEAKER HERE...BUT RH VALUES WILL BE
CRITICALLY LOW. ADDITIONALLY...ISOLATED DRY THUNDERSTORMS WILL BE
POSSIBLE FROM SOUTHEAST OREGON TO THROUGH THE SIERRA MOUNTAINS
EASTWARD ACROSS THE GREAT BASIN AND CENTRAL/NORTHERN ROCKIES.

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

$$



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