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

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133
FOUS54 KSJT 182038
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
338 PM CDT THU SEP 18 2014<br>

TXZ128-191015-
HAMBY RAWS-CALLAHAN TX
32.50N  99.62W ELEV. 1900 FT
338 PM CDT THU SEP 18 2014

DATE           09/18/14      FRI 09/19/14            SAT 09/20/14            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                      70          85          71          85          69
TEMP          81 80 74 72 71 70 75 80 85 83 76 73 72 71 76 81 85 83 75 72 70 69
DEWPT         69 70 69 68 68 67 68 68 68 68 68 67 68 69 68 66 67 68 68 68 68 68
MAX/MIN RH                   90          57          94          55          97
RH            67 72 84 87 90 90 79 68 57 61 77 82 88 94 78 61 55 61 79 89 93 97
WIND DIR       E  E SE SE SE  E SE SE SE SE SE SE SE SE  S  S  S SE SE SE SE SE
WIND SPD       8  8  5  3  3  4  9  9 10 10  9  9  7  7  9 10 10  8  5  4  3  3
CLOUDS        OV OV OV OV OV B2 B2 B2 B2 B2 B2 B1 B2 OV OV B2 OV OV OV OV OV B2
CLOUDS(%)     97 93 90 90 89 84 86 87 87 86 73 63 81 99 93 87 90 93 96100 92 85
POP 12HR                     40          40          40          50          40
QPF 12HR                   0.08        0.39        0.08        0.16        0.10
RAIN SHWRS     O SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
TSTMS          O SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC SC
LAL            5  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3
HAINES         3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  3  2  2  2
MIX HGT        3  3 <1 <1 <1 <1  1  3  5  3 <1 <1 <1 <1  2  4  5  3 <1 <1 <1 <1
T WIND DIR     E SE  S  S  E  E  E SE SE SE SE  S  S  S  S  S  S  E SE SE  E SE
T WIND SPD     9 11  9  8  3  4 10 12 13 13  9 13 16 13 12 11  9 10 17 16 12 12
SMOKE DISP    PR PR PR PR PR PR PR PR FR PR PR PR PR PR PR PR PR PR PR PR PR PR


DATE           09/21  MON 09/22/14  TUE 09/23/14  WED 09/24/14  THU 09/25/14
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          84      68    82      64    83      63    84      63    84
TEMP          79 82   71 68 78 79   67 64 77 80   66 63 78 81   66 63 78 81
DEWPT         67 68   65 64 63 61   62 62 62 62   61 61 61 61   59 61 60 59
MIN/MAX RH       58      87    51      94    49      93    46      93    43
RH            67 63   83 87 60 54   84 94 60 54   84 93 57 51   77 93 55 47
PWIND DIR         E      NE    NE       E     E       E    SE      SE    SE
WIND CHAR       <15     <15   <15     <15   <15     <15   <15     <15   <15
AVG CLOUDS    B2 B2   B2 B1 B1 B1   B1 B1 B1 B1   B1 B1 B1 B1   SC SC B1 B1
POP 12HR         40      30    20      10    10      10    10      10    10
RAIN SHWRS    SC SC   SC SC IS IS
TSTMS         SC SC   SC SC IS IS

$$

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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