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

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435
FOUS54 KSJT 272006
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
306 PM CDT SAT AUG 27 2016<br>

TXZ170-281045-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
306 PM CDT SAT AUG 27 2016

DATE           08/27/16      SUN 08/28/16            MON 08/29/16            TUE
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                      72          89          70          88          71
TEMP          91 87 78 75 74 72 78 86 89 85 77 73 72 70 77 85 88 84 77 74 72 71
DEWPT         67 68 70 70 70 69 70 68 67 68 69 69 70 70 70 69 68 68 69 69 70 69
MAX/MIN RH                   92          48          99          51          93
RH            45 53 75 84 89 92 76 55 48 56 77 86 92 99 79 59 51 59 76 84 92 93
WIND DIR       E  E  E SE  E  E  E NE  E  E  E  E NE NE NE  E  E  E  E  E  E NE
WIND SPD       5  6  4  3  2  2  3  5  8  8  4  3  3  3  4  6  9  8  4  3  3  3
CLOUDS        B1 B1 B1 B1 SC SC SC B1 B1 B1 B1 B1 B1 B1 B1 B1 B2 B2 B2 B2 B2 B2
CLOUDS(%)     57 68 56 51 49 41 50 61 63 64 60 55 55 56 63 69 76 82 77 72 72 71
POP 12HR                     20          30          20          40          30
QPF 12HR                   0.01        0.02        0.02        0.06        0.02
RAIN SHWRS     S  S  S        C  C  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
TSTMS          S  S  S        C  C  C  C  S  S  S  S  C  C  C  C  C  C  C  C  C
LAL                     2     1     3     3     2     2     3     3     3     3
HAINES                  3     3     3     3     3     3     3     3     3     3
MIX HGT              4900   600  6900  6800  4200   900  6000  7400  4200   700
T WIND DIR             SE    SE     E     E     E     E     E     E     E     E
T WIND SPD              8     1     1     8     6     2     9    11     5     3
SMOKE DISP             FR    PR    GD    GD    FR    PR    GD    GD    PR    PR


DATE           08/30 WED 08/31/16 THU 09/01/16 FRI 09/02/16 SAT 09/03/16
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            88      69      88      71      89      71      90      71      91
TEMP          85 84 73 69 85 84 74 71 86 85 74 71 87 86 74 71 87 87
DEWPT         69 69 70 69 70 69 70 69 69 69 69 70 69 68 69 70 68 68
MIN/MAX RH
RH            59 61 92 99 61 61 87 95 57 58 84 97 55 55 84 95 53 53
PWIND DIR           E       E       E       E      SE      SE      SE      SE       S
WIND CHAR         <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B1 B2 B1 B1 B1 B1 B1 B1 B1 SC SC SC SC SC FW FW FW
POP 12HR           40      20      20      10      20       5      20       5      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 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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