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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
340 PM EDT Tue Oct 17 2017

VAZ020-180900-
RAWS 441801
37.99N  79.76W Elev. 2160 ft
340 PM EDT Tue Oct 17 2017

Date           10/17/17      Wed 10/18/17            Thu 10/19/17            Fri
UTC 3hrly     21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly     17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08

MIN/MAX TEMP                 36          66          39          71          43
TEMP          59 51 46 42 40 38 53 62 64 55 50 46 43 41 57 67 68 59 53 50 47 45
DEWPT         35 33 36 36 35 36 41 38 37 36 36 36 36 36 36 36 36 39 40 42 42 41
MIN/MAX RH                   92          36          83          29          89
RH            40 50 68 79 82 92 64 41 37 49 58 68 76 82 45 32 31 47 61 74 83 86
WIND DIR       S SW  W NW NW  N  E  S  S  S SW  W  W  W  W  W  W  W NW NW NW NW
WIND SPD       3  3  2  3  2  2  2  3  4  4  2  0  1  1  3  3  5  3  4  3  4  3
CLOUDS        CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW CL CL CL CL CL CL
CLOUDS(%)      1  1  0  1  0  3  1  2  2  5  3  3  3  5  5  6  5  5  5  5  5  5
VSBY          10 10 10 10  6  6 10  7  7  7  7  7  7  7  7  7  7  7            
POP 12HR                      0           0           0           0           0
LAL            1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1               
HAINES         2  2  4  5  4  5  5  5  5  5  5  5  5  5  5  5  5  5            
MIX HGT        4 <1 <1 <1 <1 <1  1  3  3 <1 <1 <1 <1 <1  1  2  3 <1            
T WIND DIR     W  S SW NW NW  N SE SE  S  S  S  W NW NW  W  W  W  W            
T WIND SPD     1  4  3  3  3  3  1  5  5  5  3  2  3  3  4  4  9  5            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI            5  2  2  1  1  3  2 18 18  2  2  1  2  4  8 16 29  3            
MAX LVORI      2  2  3  4  5  6  3  2  2  2  3  3  3  4  2  2  2  2            
STABILITY      B  G  G  G  G  B  B  B  C  G  G  G  G  B  B  B  C  G            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            28.11 28.12 28.16 28.11 28.12 28.09 28.09 28.03            


Date           10/20 Sat 10/21/17 Sun 10/22/17 Mon 10/23/17 Tue 10/24/17
UTC 6hrly     18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MAX/MIN TEMP       72      45      74      49      74      52      71      54      MM
TEMP          69 61 52 48 70 63 55 51 70 65 57 54 68 64 59 MM MM MM
DEWPT         47 46 44 44 47 48 47 46 49 50 51 51 56 52 55 MM MM MM
RH            45 58 74 86 44 58 74 83 47 58 80 90 65 65 87 MM MM MM
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15      MM
AVG CLOUDS    CL CL CL FW FW SC SC SC SC SC SC SC B1 B1 B1 B1 MM MM
POP 12HR            0       0       0       5       5      10      40      40      MM
RAIN SHWRS                                        SC SC SC SC      

$$


This product is for planning and review purposes only and is not
to be substituted for an official fire weather spot forecast. The
data displayed are calculated from a 2.5 by 2.5 km digital
database and only approximates weather conditions in highly
varying terrain. Please relay any comments you have to the NWS via
email at rnk.webmaster@noaa.gov.

Below is a weather element key for this product.
(Note...winds do not reflect local terrain effects.)

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 humdity
RH(%)...............................Relative humidity
WIND DIR(8 POINT COMPASS)...........Wind direction
WIND SPD(MPH).......................Wind speed
CLOUDS(CATEGORY)....................Cloud cover category
     EXAMPLE: CL = CLEAR; FW = FEW; SC = Scattered; BK = Broken; OV = Overcast
CLOUDS(%)...........................Cloud cover as a percentage
VSBY................................Visibility value in statute miles
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER...
   TYPE...
       RAIN...........Rain
       RAIN SHWRS.....Rain showers
       TSTMS..........Thunderstorms
       DRIZZLE........Drizzle
       SNOW...........Snow
       SNOWSHWRS......Snow showers
       SLEET..........Sleet
       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
LAL(CATEGORY).......................Lightning Activity Level
HAINES(CATEGORY)....................Haines Index
MIX HGT(THOUSANDS OF FT AGL)........Mixing height
     Example: 6 = 6000 feet; 12 = 12000 feet; <1 = Less than 1000 foot
t WIND DIR(8 POINT COMPASS).........Transport Wind direction
T WIND SPD(MPH).....................Transport Wind speed
DISPERSION(CATEGORY)................Smoke Dispersion category
     Values: vp =Very Poor;PR = Poor; FR = Fair; GD = Good;
ADI (INDEX).........................Atmospheric Dispersion Index
MAX LVORI (INDEX)...................Low Visibility Occurrence Risk Index
STABILITY (CATEGORY)................Pasquill Turner Stability
CEILING (FT)........................Ceiling
STA PRES (INCHES MERCURY)...........Station pressure

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).......................Wind Speed
     Example: <15 = less than 15 MPH; 15> = 15 MPH or greater
AVE CLOUDS(CATEGORY)................Average Cloud Cover Category
POP 12HR(%).........................Probability for accumulating precipitation
WEATHER.............................See Day 1 through 3 weather descriptions