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

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923
FOUS54 KSJT 281942
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
242 PM CDT THU JUL 28 2016<br>

TXZ170-291015-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
242 PM CDT THU JUL 28 2016

DATE           07/28/16      FRI 07/29/16            SAT 07/30/16            SUN
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          95          73          97          74
TEMP          95 92 84 79 76 73 83 92 95 93 84 79 76 73 84 93 97 94 85 80 77 74
DEWPT         65 67 71 69 71 70 72 67 61 60 65 69 70 70 69 65 61 62 63 68 70 70
MAX/MIN RH                   90          33          90          31          89
RH            38 44 65 73 85 90 70 44 33 34 52 72 81 90 62 40 31 35 48 67 80 89
WIND DIR       S SE  S  S  S  S  S  S  S  S SE  S  S  S  S  S  S  S  S  S  S  S
WIND SPD       6  6  6  6  4  4  6  6  8  9  5  6  4  4  6  6  9  9  8  8  6  4
CLOUDS        B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC B1 B1 SC SC SC FW FW FW SC SC
CLOUDS(%)     54 59 56 54 60 66 56 47 43 38 37 36 55 63 45 30 31 15 19 24 33 42
POP 12HR                     10          10           5           5           5
QPF 12HR                      0           0           0           0           0
RAIN SHWRS     C
TSTMS          C
LAL                     1     1     1     1     1     1     1     1     1     1
HAINES                  5     5     5     5     5     5     5     5     5     5
MIX HGT              5500   500  7600  8900  4700  1000  7700  8600  4700   800
T WIND DIR              S     S     S     S     S     S     S     S     S     S
T WIND SPD             11    10    10    12    10    12    11    13    11    12
SMOKE DISP             FR    PR    FR    VG    FR    PR    GD    VG    FR    PR


DATE           07/31 MON 08/01/16 TUE 08/02/16 WED 08/03/16 THU 08/04/16
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            98      73      99      72      99      73      99      73      99
TEMP          94 95 80 73 95 96 80 72 95 96 81 73 95 96 80 73 95 96
DEWPT         65 62 69 68 62 58 65 67 60 59 65 68 62 60 65 68 63 59
MIN/MAX RH
RH            39 34 69 84 34 28 60 84 32 29 59 84 34 30 60 84 35 29
PWIND DIR           S       S       S       S       S       S       S       S       S
WIND CHAR         <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    SC FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW FW
POP 12HR           10       5       5       0       5       5       5       0       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 DIR DEG(DEGREES)...............20 FT. WIND DIRECTION IN TENS OF DEGREES
                                    RELATIVE TO DUE NORTH.
     EXAMPLE: 09 = 90 DEGREES = EAST; 18 = 180 DEGREES = SOUTH;
              27 = 270 DEGREES = WEST; 36 = 360 DEGREES = NORTH
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...
       S..............SLIGHT CHANCE
       C..............CHANCE
       L..............LIKELY
       O..............OCCASIONAL
       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
MIX HGT(FT AGL).....................MIXING HEIGHT
T WIND DIR(8 POINT COMPASS).........TRANSPORT WIND DIRECTION
T WIND SPD(MPH).....................TRANSPORT WIND SPEED
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
DISPERSION..........................LDSI
MAX LVORI...........................LVORI
STA PRES (INCHES MERCURY)...........STATION PRESSURE
ADI (INDEX).........................ATMOSPHERIC DISPERSION INDEX
CEILING (FT)........................CEILING
STABILITY (CAT).....................PASQUILL TURNER STABILITY
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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