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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
255 PM EST Thu Jan 18 2018

NCZ019-190900-
RAWS 312001
36.23N  81.32W Elev. 2380 ft
255 PM EST Thu Jan 18 2018

Date           01/18/18      Fri 01/19/18            Sat 01/20/18            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
EST 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 TEMP                 19          47          32          52          35
TEMP          42 33 29 27 26 24 32 42 47 37 35 32 33 33 40 51 51 42 40 39 39 39
DEWPT          5  6  6  5  3  2  4  7 11  6  1  4  3  8 20 27 32 30 31 33 34 34
MIN/MAX RH                   46          22          38          27          82
RH            21 31 37 38 36 38 30 23 23 27 23 30 27 34 44 39 48 62 70 79 82 82
WIND DIR      SW  W NW NW NW NW  W  W  W  W NW NW NW NW NW  W  W NW NW NW NW  W
WIND SPD       4  6  5  4  3  4  4  4  4  3  3  4  4  5  5  5  4  5  5  5  4  4
CLOUDS        CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL CL FW FW FW SC FW FW
CLOUDS(%)      1  1  1  0  0  0  1  2  1  0  0  1  2  3  4  5  7 12 16 26 18 24
VSBY           7  7  7 10 10 10  7  7  7  7  7  7  7  7  7  7  7  7            
POP 12HR                      0           0           0           0           5
LAL            1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1               
HAINES         5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5  5            
MIX HGT        2 <1 <1 <1 <1 <1 <1  2  2 <1 <1 <1 <1 <1 <1  2  2  1            
T WIND DIR    NW NW NW NW NW NW NW  W  W  W NW NW NW NW NW NW NW NW            
T WIND SPD    14  9 11 10  9 10  8  6  9  5  8  9  9 10 10 16 17 18            
DISPERSION       PR PR VP VP             VP VP VP VP             PR PR PR VP   
ADI           36  4  5  5  4  8  7 13 23  3  3  4  4  8  8 38 43  8            
MAX LVORI      1  2  2  2  2  2  2  2  2  2  2  2  2  2  2  1  1  3            
STABILITY      C  F  F  F  G  C  C  C  C  G  G  F  F  C  C  C  C  F            
CEILING              None  None  None  None  None  None  None  None  None      
STA PRES            28.04 28.01 28.02 27.99 28.00 27.99 28.01 28.00            


Date           01/21 Mon 01/22/18 Tue 01/23/18 Wed 01/24/18 Thu 01/25/18
UTC 6hrly     18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly     13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19

MAX/MIN TEMP       55      35      52      35      49      30      48      28      46
TEMP          53 45 39 37 48 47 45 39 46 40 34 31 46 39 32 29 45 38
DEWPT         44 39 33 35 43 42 39 32 28 25 25 23 26 24 23 23 28 26
RH            71 79 79 92 83 83 79 76 49 55 69 72 45 54 69 78 51 62
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW SC SC B1 B2 B2 B2 B1 SC FW FW SC SC SC SC SC SC SC
POP 12HR            5       5      50      70       0       5       5       5      20
RAIN SHWRS                IS SC NM SC                         IS   
SNOWSHWRS                                                     IS   

$$


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