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

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031
FOUS54 KSJT 202041
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
241 PM CST SAT DEC 20 2014<br>

TXZ128-211015-
HAMBY RAWS-CALLAHAN TX
32.50N  99.62W ELEV. 1900 FT
241 PM CST SAT DEC 20 2014

DATE           12/20/14      SUN 12/21/14            MON 12/22/14            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
CST 3HRLY     15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06

MIN/MAX                      41          62          44          72          40
TEMP          53 49 45 44 43 41 44 55 62 55 50 48 48 44 49 63 72 60 50 47 47 41
DEWPT         41 41 43 41 41 40 43 44 44 41 41 40 40 37 39 37 37 36 38 38 36 34
MAX/MIN RH                  100          52          77          28          78
RH            63 76 95 91 92 98 95 66 53 58 72 73 75 75 68 38 28 41 63 70 67 78
WIND DIR       S SE  S  S  S  S  S SW SW  S  S  S SW SW SW  W  W NW  N  N  N  N
WIND SPD       8  7  8 10  9  9 10 14 14  8 10 12 12 10 10 10 10  5  5 10 14 14
CLOUDS        B2 B2 B2 B2 B2 OV B2 B1 SC FW SC SC SC SC SC SC SC SC B1 B1 B1 B1
CLOUDS(%)     77 70 75 79 84 88 76 63 44 25 27 28 30 32 37 41 45 49 56 63 66 67
POP 12HR                      5           0           5           5          30
QPF 12HR                      0           0           0           0        0.01
RAIN SHWRS                                                          SC SC SC
LAL            1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1
HAINES         3  2  3  2  2  3  4  5  5  5  5  5  4  3  4  5  5  4  4  3  2  2
MIX HGT        4  2  2  1 <1 <1  1  2  3 <1 <1 <1 <1 <1  1  2  3 <1 <1 <1  2  2
T WIND DIR     S  S  S  S  S  S SW SW SW  S  S SW SW SW SW SW SW  W NE  N  N  N
T WIND SPD     6 10 13 13 13 11 18 18 19  9 12 14 16 14 18 16 17  4  2 20 33 33
SMOKE DISP    PR PR PR PR PR PR PR PR FR PR PR PR PR PR PR PR FR PR PR PR FR GD


DATE           12/23/14  WED 12/24/14  THU 12/25/14  FRI 12/26/14  SAT 12/27/14
UTC 6HRLY     18 00 06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00
CST 6HRLY     12 18 00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18

MAX/MIN          53      32    58      41    67      41    56      32    52
TEMP          49 45 37   32 50 52 45   41 59 58 47   42 51 47 38   33 46 45
DEWPT         27 23 22   22 24 24 26   27 28 28 33   28 26 25 24   23 20 21
MIN/MAX RH       34      66    27      57    23      59    30      68    28
RH            42 41 54   65 36 33 47   57 31 33 58   58 37 42 58   68 35 39
PWIND DIR         N      NW     W      SW    SW      SW     N       N     N
WIND CHAR       15>     <15   <15     <15   15>     <15   <15     <15   <15
AVG CLOUDS    B1 SC SC   FW CL CL CL   CL FW FW FW   SC SC SC SC   FW FW FW
POP 12HR         10       0     5       5     0       0     5       5     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 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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