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

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776
FOUS54 KSJT 161030
PFWSJT

FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE SAN ANGELO TX
430 AM CST MON JAN 16 2017<br>

TXZ128-162200-
HAMBY RAWS-CALLAHAN TX
32.50N  99.62W ELEV. 1900 FT
430 AM CST MON JAN 16 2017

DATE             MON 01/16/17            TUE 01/17/17            WED 01/18/17
UTC 3HRLY     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
CST 3HRLY     03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18

MAX/MIN                      59          36          52          39          56
TEMP             40 40 52 59 52 45 42 38 37 38 47 52 48 44 43 40 40 41 51 56 52
DEWPT            40 40 42 43 42 40 38 37 34 35 36 37 39 40 40 40 40 41 43 46 47
MIN/MAX RH                   55          96          56         100          69
RH              100100 69 55 69 82 86 96 89 89 65 56 71 86 89100100100 74 69 83
WIND DIR         SW SW  W  W  N  N  N  N  N  N  N  N NE NE  N NE  N  N SW  S  S
WIND SPD          5  5  8  6  3  3  5  4  4  5  8  5  3  3  2  2  2  2  3  3  3
WIND GUST
CLOUDS           B2 B2 SC FW FW SC SC SC B1 B1 B1 B1 B2 B2 B1 B1 B1 B1 B1 SC B1
CLOUDS(%)        85 85 31 23 23 27 36 44 53 54 53 64 76 83 65 66 68 63 61 48 57
POP 12HR                      0           5          20          40          10
QPF 12HR                      0           0        0.02        0.10           0
RAIN SHWRS                                S  S  S  S  C  C  C  C
OBVIS           PF+PF+
LAL                     1     1     1     1     1     1     1     1     1     1
HAINES                  4     3     2     2     4     4     5     5     2     2
MIX HGT              1800  2600   300   300  1300  1800  1000   300  2400  3400
T WIND DIR             SW     W    NE    NE     N     N     E    NW     S    SW
T WIND SPD              8     5     5    11    11     9     4     2     3     6
SMOKE DISP             PR    PR    PR    PR    PR    PR    PR    PR    PR    PR


DATE               THU 01/19/17  FRI 01/20/17  SAT 01/21/17  SUN 01/22/17
UTC 6HRLY     06   12 18 00 06   12 18 00 06   12 18 00 06   12 18 00
CST 6HRLY     00   06 12 18 00   06 12 18 00   06 12 18 00   06 12 18

MIN/MAX            43    66      45    66      44    66      43    59
TEMP          47   44 59 59 51   46 59 59 50   45 59 59 49   44 54 52
DEWPT         46   43 43 39 38   37 37 35 34   35 38 36 34   32 33 32
MAX/MIN RH        100    38      73    33      73    34      65    36
RH            96   96 55 47 61   71 44 40 54   68 45 42 56   62 45 46
PWIND DIR           S    SW      SW    SW      SW    SW      SW    NW
WIND CHAR         <15   <15     <15   <15     <15   <15     <15   15>
AVG CLOUDS    SC   SC FW FW FW   FW FW FW FW   SC SC B1 B1   SC SC SC
POP 12HR            5     5       0     0       5    10      20    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 MPN; 15> = 15 MPH OR GREATER
AVE CLOUDS(CAT).....................AVERAGE CLOUD COVER CATEGORY
POP 12HR(%).........................PROBABILITY FOR ACCUMULATION PRECIPITATION
WEATHER...
     SEE DAY 1 THROUGH 3 WEATHER DESCRIPTIONS



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