National Weather Service Weather Forecast Office

Fire Weather Forecast (Nevada County)

LAST UPDATED: 419 PM CDT SAT MAY 18 2013

.DISCUSSION... THE UPPER RIDGE AXIS HAS SHIFTED EAST OF THE FOUR
STATE REGION AND HAS SHIFTED THE WINDS ALOFT TO THE WEST AND
SOUTHWEST. SURFACE HIGH PRESSURE ALSO WAS EAST OF THE AREA WITH
DEEPENING SURFACE LOW PRESSURE OVER THE PLAINS AND WEST TEXAS
RESULTING IN A TIGHT PRESSURE GRADIENT OVER THE FOUR STATE
REGION. THIS WILL RESULT IN STRONG AND GUSTY WINDS THROUGH THE
REST OF THE WEEKEND AND INTO THE START OF THE WORK WEEK. THE
SOUTHERLY LOW LEVEL FLOW WILL KEEP GULF MOISTURE SPREADING INTO
THE AREA. RAIN CHANCES WILL INCREASE TUESDAY OVER SOUTHEAST
OKLAHOMA...BEFORE SPREADING SOUTHEAST TUESDAY NIGHT AND WEDNESDAY
OVER THE REMAINDER OF THE REGION AHEAD OF A WEAK SURFACE FRONT
AND ASSOCIATED UPPER LEVEL STORM SYSTEM.

                      TONIGHT      SUN          SUN NIGHT    MON

CLOUD COVER           PCLDY        PCLDY        PCLDY        PCLDY        
PRECIP TYPE           NONE         NONE         NONE         NONE         
CHANCE PRECIP (%)     0            0            0            0            
TEMP (24H TREND)      70 (-1)      88 (0)       71           87           
RH % (24H TREND)      84 (-14)     53 (-4)      88           56           
20FTWND-AM(MPH)                    S 10 G16                  S 10 G18     
20FTWND-PM(MPH)       S 11         S 13 G19     S 10 G18     S 13 G18     
PRECIP AMOUNT         0.00         0.00         0.00         0.00         
PRECIP DURATION       0            0            0            0            
MIXING HGT(M-MSL)     97           1652         91           1590         
MIXING HGT(FT-MSL)    318          5419         299          5216         
TRANSPORT WND (M/S)   SW 12        S 10         S 15         S 12         
TRANSPORT WND (MPH)   SW 26        S 22         S 33         S 26         
VENT RATE (M^2/S)     1164         16520        1365         19080        
CATEGORY DAY          1            5            1            5            
MIX HGT 500 TEMP(F)                74                        76           
STABILITY CLASS       F            C            E            C