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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
650 PM EST Mon Feb 19 2018

NCZ006-200900-
RAWS 310801
36.37N  79.29W Elev. 580 ft
650 PM EST Mon Feb 19 2018

Date           02/19/18      Tue 02/20/18            Wed 02/21/18            Thu
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                 50          73          61          76          60
TEMP             51 50 50 50 52 60 69 73 69 66 64 63 62 68 73 76 70 67 65 64 62
DEWPT            49 50 50 50 52 57 58 58 58 60 59 58 59 61 62 62 61 61 60 61 60
MIN/MAX RH                  100          60          90          62          94
RH               93100100100100 90 68 59 68 81 84 84 90 78 68 62 73 81 84 90 93
WIND DIR          S  S  S  S  S  S SW  S  S  S  S  S SW SW SW SW SW  S  S SW  S
WIND SPD          1  2  1  1  2  5  9  9  4  4  5  6  6 10 11 11  5  5  5  6  6
CLOUDS           OV OV OV B2 B2 B2 B2 B1 B1 B1 SC B1 B1 B2 B2 B1 B1 B1 B1 B1 B2
CLOUDS(%)        96 93 88 85 79 76 70 69 66 59 48 53 64 72 80 64 61 58 55 61 77
VSBY              5  5  3  1  1  7  7  7  7  7  7  7  7  7  7  7  7            
POP 12HR                     10          10          10          20          10
DRIZZLE                                                                        
RAIN                                                                           
RAIN SHWRS                                           IS IS                   IS
Obvis            PF PF PF PF PF                                                
LAL               1  1  1  1  1  1  1  1  1  1  1  1  1  1  1  1               
HAINES            2  2  2  3  3  3  4  4  3  2  2  2  2  2  2  3  3            
MIX HGT          <1 <1 <1 <1 <1 <1  3  3  3  2  2  1 <1  3  4  4  2            
T WIND DIR        S  S  S  S  S SW SW SW  S  S  S SW  S SW SW SW SW            
T WIND SPD        4  6  3  8  4  8 19 17 18 21 19 19 12 25 19 17 16            
DISPERSION       VP VP VP VP             VP VP PR PR             PR PR PR PR   
ADI               2  3  2  3  4  9 44 45 12 15 13 13 15 56 51 47 11            
MAX LVORI         8  9 10  9  9  5  1  1  3  4  4  4  5  3  1  1  3            
STABILITY         F  F  F  F  D  D  D  D  E  E  E  E  D  D  D  D  E            
CEILING               900   900  1000  1400  None  None  1000  3100 35000      
STA PRES            29.77 29.78 29.81 29.77 29.81 29.80 29.83 29.78            


Date           02/22 Fri 02/23/18 Sat 02/24/18 Sun 02/25/18 Mon 02/26/18
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       71      50      62      54      71      58      71      50      64
TEMP          69 63 56 53 57 59 56 56 67 66 62 61 70 63 57 52 59 55
DEWPT         62 57 51 50 51 52 53 54 58 58 58 58 58 52 50 47 44 43
RH            78 81 83 89 80 78 90 93 73 75 87 90 66 67 77 83 57 64
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    B2 B2 B2 B2 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2 B1 B1 B1 SC
POP 12HR           30      30      40      20      30      40      30      20      30
RAIN SHWRS    IS SC SC SC SC IS IS    SC SC SC SC    SC    IS 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