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

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486
FOUS54 KSJT 301022 AAA
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
522 AM CDT SAT MAY 30 2015<br>

TXZ170-302215-
MASON RAWS-MASON TX
30.74N  99.19W ELEV. 1463 FT
522 AM CDT SAT MAY 30 2015

DATE             SAT 05/30/15            SUN 05/31/15            MON 06/01/15
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                      82          62          80          62          85
TEMP             68 73 79 82 79 70 63 63 62 68 77 80 78 69 63 63 62 70 80 85 82
DEWPT            68 69 67 66 66 66 63 63 62 64 63 61 61 63 62 63 62 66 62 60 62
MIN/MAX RH                   58         100          52         100          44
RH              100 88 66 58 65 87100100100 86 63 52 57 81 98100100 89 54 44 51
WIND DIR          E NE NE  N  N  N  N  N NE  N NE NE  E  E SE SW  S  S SE SE SE
WIND SPD          3  2  7  4  7  3  3  3  5  4  5  5  5  3  3  1  2  3  3  3  5
CLOUDS           B2 B2 B2 B2 B2 B1 B1 B2 B2 B1 B1 SC SC SC FW SC SC SC SC SC FW
CLOUDS(%)        85 84 82 77 71 69 67 70 72 63 53 42 31 27 22 27 31 34 36 31 25
POP 12HR                     70          40          20           5          10
QPF 12HR                   0.31        0.03        0.04           0           0
RAIN SHWRS       NM NM NM NM SC SC SC SC IS IS IS IS
TSTMS            NM NM NM NM SC SC SC SC IS IS IS IS
LAL               4  4  4  4  3  3  3  3  2  2  2  2  1  1  1  1  1  1  1  1  1
HAINES            3  3  3  2  3  3  3  2  3  3  3  3  4  4  3  3  3  4  4  4  4
MIX HGT           1  3  5  4  3  1 <1 <1 <1  3  6  8  6 <1 <1 <1 <1  4  8  8  7
T WIND DIR        S  S  N NE NE NE  E  N  N NE NE  N  E SE  S SW SW SW  S  S  S
T WIND SPD        6  2  9  3  8  6  4  2  5  6  6  5  3  4  3  3  3  9  2  2  5
SMOKE DISP       PR PR FR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR PR
FLASH FLOOD       A  A
SVR TSTORM        A


DATE          TUE 06/02/15  WED 06/03/15  THU 06/04/15  FRI 06/05/15
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          64    85      66    85      67    85      67    86
TEMP          65 64 81 82   67 66 81 82   68 67 81 82   68 67 82 83
DEWPT         64 63 65 63   63 64 64 63   65 65 65 65   67 67 66 65
MAX/MIN RH       97    50      93    48      94    51      99    50
RH            97 97 57 53   88 93 56 52   91 94 57 56   97 99 58 55
PWIND DIR        SE     S       S     S       S     S       S     S
WIND CHAR       <15   <15     <15   <15     <15   <15     <15   <15
AVG CLOUDS    FW FW SC SC   SC SC SC FW   SC SC B1 SC   SC SC B1 SC
POP 12HR          5    10       5     5       5     5      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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