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

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700
FOUS54 KSJT 290944
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
444 AM CDT SAT AUG 29 2015<br>

TXZ170-292215-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
444 AM CDT SAT AUG 29 2015

DATE             SAT 08/29/15            SUN 08/30/15            MON 08/31/15
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                      97          71          95          70          96
TEMP             71 82 92 96 94 84 78 74 71 82 91 94 92 82 76 73 70 81 91 95 93
DEWPT            60 59 58 56 55 57 58 60 61 63 58 58 57 60 60 63 64 62 60 58 56
MIN/MAX RH                   26          71          29          81          28
RH               69 46 32 26 28 41 51 62 71 54 33 30 31 47 59 71 81 52 36 29 30
WIND DIR         SW  S  S  S SE SE  S  S  S SW  S SE SE  S  S  S  S  S  S  S SE
WIND SPD          4  4  5  5  5  5  5  4  4  5  4  5  6  5  6  5  4  5  6  8  9
CLOUDS           SC SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC SC FW FW FW FW FW FW FW
CLOUDS(%)        39 49 59 60 60 60 61 61 36 36 33 33 32 32 17 17 21 21 21 21 21
POP 12HR                     10           5           5           5           0
QPF 12HR                      0           0           0           0           0
LAL                     1     1     1     1     1     1     1     1     1     1
HAINES                  6     5     5     5     5     5     5     5     5     5
MIX HGT              5600  8300  4400  1000 10500 11700  5500   200  9800 11200
T WIND DIR              S     E    SE    SW    SW    SE     S    SW     S     S
T WIND SPD             10     6     6    12     5     6     8     5    10    11


DATE          TUE 09/01/15 WED 09/02/15 THU 09/03/15 FRI 09/04/15
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            70      95      71      96      72      95      72      96
TEMP          77 70 91 92 77 71 92 93 78 72 91 92 78 72 92 93
DEWPT         60 66 61 57 64 67 63 59 65 68 62 60 63 68 61 59
MAX/MIN RH
RH            57 86 37 31 65 87 39 33 65 86 38 34 61 87 36 33
PWIND DIR           S       S      SE       S       S       S      SE      SE
WIND CHAR         <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW FW FW FW FW SC FW FW FW FW FW FW FW SC SC
POP 12HR            5       5       0       5       0       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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