NWS

The Fire Weather Point Forecast Matrix for the

George West RAWS Site

28.37N  98.12W ELEV. 215 FT
333 AM CST SUN MAR 3 2013

DATE             SUN 03/03/13            MON 03/04/13            TUE 03/05/13
UTC 3HRLY     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
CST 3HRLY     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18

MAX/MIN                      77          54          90          55          71
TEMP             37 52 72 76 72 61 58 56 56 64 82 89 86 69 61 60 57 60 67 70 68
DEWPT            27 37 38 36 37 47 48 48 49 50 50 45 46 53 56 57 44 41 40 36 32
MIN/MAX RH                   23          79          22          89          26
RH               67 57 29 23 28 60 70 75 79 61 33 22 24 57 85 89 62 49 37 29 27
WIND DIR          S  S  S  S SE SE  S  S  S  S  S  S  S SE  S  N  N  N  N  N  N
WIND SPD          4  6 11 13 13 13 13 11 10 13 12 12 12 10  1 14 20 23 19 19 12
CLOUDS           CL CL CL FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW CL CL CL
CLOUDS(%)         5  5  5  9 13 15 15 17  9 14 10 11 14 15 14 21 12 14  3  0  0
POP 12HR                      0           0           0           0           0
QPF 12HR                      0           0           0           0           0
LAL                     1     1     1     1     1     1     1     1     1     1
HAINES                  5     6     6     4     4     6     5     4     4     5
MIXING HGT           4500  4600  2700     0  5400  6600  3000  1300  4100  5400
T WIND DIR              S     S     S     S     S     S     S    SW     N    NE
T WIND SPD             11    18    21    18    21    17    24    20    29    27
FIRE WEATHER                                                         A  A  A  A


DATE               WED 03/06/13  THU 03/07/13  FRI 03/08/13  SAT 03/09/13
UTC 6HRLY     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00
CST 6HRLY     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18

MIN/MAX            42    68      43    71      53    73      59    75
TEMP          47   44 62 65 47   44 65 69 56   54 68 72 61   60 72 74
DEWPT         25   20 22 21 28   32 45 49 52   53 57 57 59   60 60 61
MAX/MIN RH         43    17      72    45     100    58     100    60
RH            43   38 22 19 48   61 50 49 87   97 68 61 92  100 68 64
PWIND DIR          NE    NE       E    SE      SE    SE      SE    SE
WIND CHAR         <15   <15     <15   <15     <15   <15     <15   <15
AVG CLOUDS    CL   CL FW FW SC   SC SC SC B1   B2 B2 B2 B2   B2 B2 B2
POP 12HR            0     0       0     5       5    10      10    10


THE TABLE OF CODES BELOW DESCRIBE THE PFW PRODUCT:

DAY 1 THROUGH 3...
MAX/MIN TEMP OR MIN/MAX TEMP (F)....MAXIMUM/MINIMUM AIR TEMPERATURE
TEMP (F)............................AIR TEMPERATURE
DEWPT (F)...........................DEW POINT TEMPERATURE
MIN/MAX RH OR MAX/MIN RH (%)........MAXIMUM/MINIMUM HUMIDITY
RH (%)..............................RELATIVE HUMIDITY
WIND DIR (8 POINT COMPASS)..........20 FT. WIND DIRECTION
WIND SPD (MPH)......................20 FT. WIND SPEED
WIND GUST (MPH).....................20 FT. WIND GUST
WIND CHILL..........................WIND CHILL TEMPERATURE
HEAT INDX...........................HEAT INDEX
CLOUDS (CAT)........................CLOUD COVER CATEGORY
     EXAMPLE: CL = CLEAR; FW = FEW; SC = SCATTERED;
              B1 = MOSTLY CLOUDY; B2 = CONSIDERABLE CLOUDS; OV = OVERCAST
CLOUDS (%)..........................CLOUD COVER AS A PERCENTAGE
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION
QPF 12HR (IN).......................LIQUID EQUIVALENT PRECIPITATION AMOUNT
WEATHER...
     TYPE...
       RAIN...........RAIN
       RAIN SHWRS.....RAIN SHOWERS
       TSTMS..........THUNDERSTORMS
       DRIZZLE........DRIZZLE
       SNOW...........SNOW
       SNOWSHWRS......SNOW SHOWERS
       SLEET..........SLEET
       FLURRIES.......FLURRIES
       FRZG RAIN......FREEZING RAIN
       FRZG DRZL......FREEZING DRIZZLE
     COVERAGE...
       IS.............ISOLATED
       SC.............SCATTERED
       NM.............NUMEROUS
       O..............OCCASIONAL
       S..............SLIGHT CHANCE
       C..............CHANCE
       L..............LIKELY
       WD.............WIDESPREAD
       D..............DEFINITE
       AR.............AREAS
       PA.............PATCHY
OBVIS...............................OBSTRUCTION TO VISIBILITY
     TYPE...
       F..............FOG
       PF.............PATCHY FOG
       F+.............DENSE FOG
       H..............HAZE
       BS.............BLOWING SNOW
       K..............SMOKE
       BD.............BLOWING DUST
       AF.............VOLCANIC ASHFALL
LAL (CAT)...........................LIGHTNING ACTIVITY LEVEL
HAINES (CAT)........................HAINES INDEX
FREE WIND DIR (8 POINT COMPASS).....FREE WIND LEVEL DIRECTION
FREE WIND SPD (MPH).................FREE WIND LEVEL SPEED
MIXING HGT (FEET AGL)...............MIXING HEIGHT
T WIND DIR (8 POINT COMPASS)........TRANSPORT WIND DIRECTION
T WIND SPD (MPH)....................TRANSPORT WIND SPEED
SMOKE DISP (CAT(KT-FT)).............SMOKE DISPERSION CATEGORY
     EXAMPLE: PR = POOR; FR = FAIR; GD = GOOD; VG = VERY GOOD; EX = EXCELLENT
WATCH/WARNING/ADVISORY...
     EXAMPLE: W = WARNING; Y = ADVISORY; A = WATCH
     IN EFFECT FOR THE INDICATED HOUR

DAY 4 THROUGH 7...
MAX/MIN TEMP OR MIN/MAX TEMP (F)....MAXIMUM/MINIMUM AIR TEMPERATURE
TEMP (F)............................AIR TEMPERATURE
DEWPT (F)...........................DEW POINT TEMPERATURE
RH (%)..............................RELATIVE HUMIDITY
WIND SPD (MPH)......................20 FT. WIND SPEED
     EXAMPLE: <15 = LESS THAN 15 MPH; 15> = 15 MPH OR GREATER
AVE CLOUDS (CAT)....................AVERAGE CLOUD COVER CATEGORY
POP 12HR (%)........................PROBABILITY FOR ACCUMULATING PRECIPITATION
WEATHER...
 SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS




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  • Page last modified: 26-Jan-2013 1:46 AM UTC