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

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247
FOUS54 KSJT 290829
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
329 AM CDT FRI AUG 29 2014<br>

TXZ170-292215-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
329 AM CDT FRI AUG 29 2014

DATE             FRI 08/29/14            SAT 08/30/14            SUN 08/31/14
UTC 3HRLY     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
CDT 3HRLY     04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19

MAX/MIN                      93          71          97          73          97
TEMP          75 73 81 89 92 90 81 77 75 72 83 93 97 94 84 79 75 73 83 93 97 94
DEWPT         70 69 69 66 67 64 67 68 69 70 68 66 64 63 65 67 67 68 67 65 64 64
MIN/MAX RH                   42          93          34          84          35
RH            84 87 67 47 44 42 63 74 82 93 61 41 34 36 54 68 76 84 58 40 35 37
WIND DIR       S  S  S SE SE SE SE SE SE  S SE  E  E SE SE  S  S  S  S  S  S SE
WIND SPD       8  4  7  7  9  9  8  5  3  1  3  3  5  8  8  7  4  4  8 10 11 11
CLOUDS        B1 B1 B1 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC SC SC SC SC SC SC
CLOUDS(%)     63 63 63 62 61 59 58 56 54 52 44 40 36 33 34 36 37 38 39 39 40 40
POP 12HR                     20          30          20          10          10
QPF 12HR                   0.05        0.05        0.01           0           0
RAIN SHWRS    IS IS IS IS IS SC SC SC SC IS IS IS IS
TSTMS         IS IS IS IS IS SC SC SC SC IS IS IS IS
LAL            2  2  2  2  2  3  3  3  3  2  2  2  2  1  1  1  1  1  1  1  1  1
HAINES         3  3  3  3  4  4  4  3  4  4  5  5  4  5  5  4  4  3  3  3  5
MIX HGT        1 <1  4  7  8  4 <1  1 <1 <1  3  8 10  8  1  1 <1 <1  3  8 10  9
T WIND DIR     S  S  S SE SE SE  S  S  S  S  S  E  E SE  S  S  S  S  S  S  S  S
T WIND SPD    13  8 12 10 10 13 21 19 10  5  5  6 10 12 12 12 14 11 17 14 14 20
SMOKE DISP    PR PR PR GD GD FR PR PR PR PR PR FR GD GD PR PR PR PR FR VG VG EX


DATE          MON 09/01/14  TUE 09/02/14  WED 09/03/14  THU 09/04/14
UTC 6HRLY     06 12 18 00   06 12 18 00   06 12 18 00   06 12 18 00
CDT 6HRLY     01 07 13 19   01 07 13 19   01 07 13 19   01 07 13 19

MIN/MAX          74    96      74    95      73    96      72    94
TEMP          80 74 93 94   80 74 91 92   78 73 93 94   78 72 91 92
DEWPT         67 70 66 62   65 68 66 64   67 69 67 64   66 67 65 63
MAX/MIN RH       87    35      83    37      87    35      85    36
RH            66 87 42 36   61 83 44 40   69 87 43 37   66 85 43 38
PWIND DIR         S     S       S     S      SE    SE      SE    SE
WIND CHAR       <15   <15     <15   <15     <15   <15     <15   <15
AVG CLOUDS    SC SC SC SC   SC FW FW SC   SC SC SC SC   SC SC SC SC
POP 12HR         10    10      10    10      10    10      10    10

$$

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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