Fire Weather Point Forecast Matrices
Mason RAWS
Issued by NWS San Angelo, TX

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378
FOUS54 KSJT 012004
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
303 PM CDT WED OCT 1 2014<br>

TXZ170-021015-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
303 PM CDT WED OCT 1 2014

DATE           10/01/14      THU 10/02/14            FRI 10/03/14            SAT
UTC 3HRLY     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
CDT 3HRLY     16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07

MIN/MAX                      73          94          57          85          51
TEMP          95 89 81 77 75 73 81 90 94 90 72 66 62 60 67 79 84 79 64 59 56 53
DEWPT         66 66 66 68 71 71 72 70 66 64 61 58 56 54 51 46 44 45 44 43 44 45
MAX/MIN RH                   95          41          83          25          73
RH            39 46 61 74 89 95 76 53 41 43 69 76 80 81 56 31 25 30 48 55 64 73
WIND DIR       S  S  S  S  S  S  S  S SW  W  W  N  N  N NE NE NE NE NE NE  E  E
WIND SPD       9  8  4  8  9  7 12 11 10  5  4  5  5  4  8 10  9  4  3  3  3  3
CLOUDS        FW FW FW FW B1 B2 B1 SC SC B1 SC SC SC FW FW FW FW FW FW CL CL CL
CLOUDS(%)     23 23 23 23 60 73 58 46 40 58 48 38 30 24 17  9  8  7  6  5  4  4
POP 12HR                      5          30          30           0           0
QPF 12HR                      0        0.10        0.02           0           0
RAIN SHWRS                   SC SC SC SC SC SC
TSTMS                        SC SC SC SC SC SC
LAL            1  1  1  1  1  3  3  3  3  3  3  1  1  1  1  1  1  1  1  1  1  1
HAINES         3  3  3  4  5  4  5  5  4  4  5  4  5  5  5  5  5  5  5  3  4
MIX HGT        6  4 <1 <1 <1 <1  2  4  7  4 <1 <1 <1 <1  2  4  5  4 <1 <1 <1 <1
T WIND DIR     S  S  S  S  S  S  S  S SW SW  W  N  N  N NE  N NE NE NE  N NE  E
T WIND SPD    14 18 12 14 13 10 21 21 18 14 10 12 11  4 14 16 16 13  4  3  5  3
SMOKE DISP    GD GD PR PR PR PR FR GD VG FR PR PR PR PR PR FR GD FR PR PR PR PR


DATE           10/04  SUN 10/05/14  MON 10/06/14  TUE 10/07/14  WED 10/08/14
UTC 6HRLY     18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00
CDT 6HRLY     13 19   01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19

MAX/MIN          82      57    87      63    86      64    87      64    86
TEMP          75 75   63 59 81 80   68 65 81 81   69 66 82 82   69 66 81 81
DEWPT         36 44   45 52 55 56   58 60 60 59   63 62 62 59   64 63 63 59
MIN/MAX RH       23      79    35      84    41      86    42      90    44
RH            24 33   53 79 42 44   69 84 48 47   81 86 51 46   84 90 54 47
PWIND DIR        SE       S     S       S     S       S     S       S     S
WIND CHAR       <15     <15   <15     <15   <15     <15   <15     <15   <15
AVG CLOUDS    CL FW   FW SC SC SC   SC SC SC SC   FW SC SC SC   SC SC SC SC
POP 12HR          0       0     5      10    10      10    10      10     5

$$

BELOW IS A WEATHER ELEMENT KEY FOR THIS 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
10K WIND DIR(8 POINT COMPASS).......10000 FOOT WIND DIRECTION
10K WIND SPD(MPH)...................10000 FOOT WIND SPEED
MIX HGT(THOUSANDS OF FT AGL)........MIXING HEIGHT
     EXAMPLE: 6 = 6000 FEET; 12 = 12000 FEET; <1 = LESS THAN 1000 FEET
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
FOSBERG.............................FOSBERG FIRE WEATHER INDEX
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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