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

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833
FOUS54 KSJT 281031
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
431 AM CST FRI NOV 28 2014<br>

TXZ170-282215-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
431 AM CST FRI NOV 28 2014

DATE             FRI 11/28/14            SAT 11/29/14            SUN 11/30/14
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                      70          46          74          54          73
TEMP             41 51 66 70 63 55 51 48 48 58 70 74 68 61 57 55 55 61 70 73 65
DEWPT            39 43 47 46 46 45 45 46 47 49 50 51 51 53 54 55 55 56 56 55 54
MIN/MAX RH                   43          99          43         100          53
RH               94 74 51 43 54 70 82 92 95 74 49 44 54 76 91 99100 82 61 53 67
WIND DIR          S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S  S
WIND SPD          8 10 12 10 10  8  8  9  9 14 15 11  9  9 10  9  8 10 11 10  9
CLOUDS           B1 SC FW FW CL CL CL FW FW FW CL CL CL FW SC SC B1 SC FW FW CL
CLOUDS(%)        51 36 21 10  3  2  2 11 24 14  3  3  3 19 34 43 51 38 24 15  5
POP 12HR                      0           0           5           5           5
QPF 12HR                      0           0           0           0           0
LAL               1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
HAINES            4  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5
MIX HGT          <1 <1  2  4  2 <1 <1 <1 <1 <1  2  4  2 <1 <1 <1 <1  1  3  4  2
T WIND DIR       SW  S SW SW  S  S  S SW  S SW  S  S  S  S  S  S  S  S  S SW  S
T WIND SPD        5 17 21 21  8  6  9 11 11 19 27 24 10  9 12 13 17 21 18 17  8
SMOKE DISP       PR PR FR GD PR PR PR PR PR PR FR GD PR PR PR PR PR PR FR GD PR


DATE               MON 12/01/14  TUE 12/02/14  WED 12/03/14  THU 12/04/14
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            47    54      34    59      45    62      48    64
TEMP          51   47 53 48 37   35 56 55 47   45 60 58 50   48 62 60
DEWPT         49   47 33 28 22   22 32 40 44   44 49 48 50   47 52 50
MAX/MIN RH        100    41      65    40      98    60     100    63
RH            94  100 46 47 55   60 41 57 89   96 68 69100   96 70 69
PWIND DIR          SW     N       N    SW       S    SE      SE     S
WIND CHAR         <15   <15     <15   <15     <15   <15     <15   <15
AVG CLOUDS    CL   FW SC SC SC   SC SC SC SC   B1 B1 B1 B1   B2 B1 B2
POP 12HR            0    10       5     5      10    10      10    20
RAIN SHWRS                                                      IS IS

$$

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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