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Apr 21, 2014 Day 2 Fire Weather Outlook
Updated: Mon Apr 21 08:41:03 UTC 2014 (Print Version | 20140421 0700Z Day 2 FireWX shapefile | 20140421 0700Z Day 2 FireWX KML)
Day 2 Fire
 Population  Cities/Towns  CWAs  Interstates  Counties  FEMA Regions  Day 2 Surface Analysis

Risk Area (sq. mi.) Area Pop. Some Larger Population Centers in Risk Area
Critical 78,178 2,447,546 Las Vegas, NV...Henderson, NV...N. Las Vegas, NV...St. George, UT...Tuba City, AZ...
   ZCZC SPCFWDDY2 ALL
   FNUS22 KWNS 210840

   DAY 2 FIRE WEATHER OUTLOOK  
   NWS STORM PREDICTION CENTER NORMAN OK
   0340 AM CDT MON APR 21 2014

   VALID 221200Z - 231200Z

   ...CRITICAL FIRE WEATHER AREA FOR SRN NV...FAR SERN CA...NRN
   AZ...FAR SWRN UT...

   ...SYNOPSIS...
   A PROGRESSIVE AND AMPLIFIED PATTERN WILL TAKE HOLD ACROSS THE
   CONUS...CHARACTERIZED BY A PAIR OF POTENT SHORTWAVE UPPER TROUGHS.
   CRITICAL FIRE WEATHER POTENTIAL WILL BE ASSOCIATED WITH THE
   WRN-CONUS UPPER TROUGH DIGGING SEWD ACROSS THE GREAT BASIN INTO THE
   ROCKIES...AS A SUBSTANTIAL INCREASE IN SWLY LOW-MIDLEVEL FLOW
   OCCURS. AT THE SFC...LOW PRESSURE WILL GRADUALLY DEEPEN AND SHIFT
   EWD ACROSS NRN NV/UT...BEFORE A SECONDARY LOW BECOMES DOMINANT
   ACROSS NRN MT DURING THE LATE AFTERNOON. AN ATTENDANT COLD FRONT
   WILL QUICKLY SPREAD EWD ACROSS THE INTER-MOUNTAIN WEST AND GREAT
   BASIN.

   ...MUCH OF THE SOUTHWEST...
   A BELT OF ENHANCED LOW-MIDLEVEL SWLY FLOW WILL BECOME ESTABLISHED
   FROM SRN CA NWD INTO SRN ID...WITH 700 MB FLOW MAXIMIZED ACROSS ERN
   NV/WRN UT AT 40-50 KT. DIURNALLY STRENGTHENING BOUNDARY-LAYER MIXING
   WILL ALLOW STRONGER FLOW ALOFT TO TRANSLATE TO THE SFC...WITH
   SUSTAINED WIND SPEEDS RANGING FROM 20-30 MPH ACROSS NRN AZ AND FAR
   SERN CA TO 30-40 MPH OVER SRN NV AND SWRN UT. SEASONABLY WARM
   DAYTIME TEMPERATURES REACHING THE 80S-LOWER 90S F OVER THE LOWER
   ELEVATIONS WILL YIELD MIN RH VALUES AOB 10 PERCENT. RH VALUES ARE
   FORECAST TO BE MORE MARGINAL ACROSS ERN PORTIONS OF THE CRITICAL
   RISK AREA...WHERE TEMPERATURES WILL BE COOLER OVER HIGHER ELEVATION
   LOCATIONS...BUT WILL STILL BE AOB 15 PERCENT DURING THE AFTERNOON. 

   SURROUNDING THE CRITICAL RISK AREA...INCLUDING PORTIONS OF CNTRL
   UT/NV...SRN/CNTRL AZ...WRN/CNTRL/NERN NM...AND SERN CO...ELEVATED TO
   SPOTTY/LOCALIZED CRITICAL CONDITIONS WILL BE POSSIBLE DURING THE
   AFTERNOON. ALTHOUGH WIND SPEEDS WILL BE STRONG /20-30 MPH/ INTO
   PORTIONS OF NM AND SERN CO...A RELATIVELY COOLER AND MORE MOIST
   BOUNDARY LAYER WILL LIKELY PRECLUDE RH VALUES FROM REACHING CRITICAL
   THRESHOLDS. MEANWHILE...SUSTAINED WIND SPEEDS ARE EXPECTED TO BE
   MORE MARGINAL WITH SWD EXTENT /15-20 MPH/ AS THIS AREA WILL BE
   DISPLACED FROM THE STRONGEST LOW-MIDLEVEL FLOW...BUT WIDESPREAD
   UPPER-SINGLE DIGIT TO LOWER-TEEN RH VALUES ARE LIKELY.

   ..ROGERS.. 04/21/2014

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

   CLICK FOR DAY 2 FIREWX AREAL OUTLINE PRODUCT (KWNSPFWFD2)

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Page last modified: April 21, 2014
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