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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri Apr 17 2026

NCZ006-172000-
RAWS 310801
36.37N  79.29W Elev. 580 ft
801 AM EDT Fri Apr 17 2026

Date             Fri 04/17/26            Sat 04/18/26            Sun 04/19/26
UTC 3hrly     09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly     05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20

MAX/MIN TEMP                 87          59          92          64          65
TEMP                79 86 87 80 68 65 60 61 82 90 92 83 76 73 66 64 64 62 63 58
DEWPT               55 50 49 50 50 49 50 52 55 54 53 54 54 55 54 51 46 39 33 28
MAX/MIN RH                   27          73          27          65          31
RH                  44 29 27 35 52 56 69 72 40 30 27 37 46 53 65 63 52 43 32 32
WIND DIR            NW NW NW NW SW  N  N  N  S SW SW  S  S SW SW NW NW NW NW NW
WIND SPD             4  5  5  1  1  0  0  0  2  6  8  4  5  5  5  9 10 10  9  5
WIND GUST                                                     16 19 24    19   
CLOUDS              SC CL FW FW FW FW SC FW SC SC SC B1 B1 B2 B2 OV OV B2 B1 SC
CLOUDS(%)           40  3  9 17  8 19 45 20 28 42 35 51 55 74 78 91 88 85 66 26
VSBY                10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR                      0           0           0          20          60
RAIN SHWRS                                                 IS IS NM NM SC SC   
MIX HGT              5  8  8 <1 <1 <1 <1 <1  4  8  8 <1 <1 <1 <1  2  3  3  7 <1
T WIND DIR          NW NW NW  N  S  W NW SE SW SW SW  S  S  S SW  W NW NW NW NW
T WIND SPD          16 13 12  2  2  2  1  1 11 14 17  8  6  8  9 19 28 11 24 10
DISPERSION                   VP VP VP VP             VP PR PR PR             PR
ADI                105135124  1  1  1  1  1 62125147  5  5  5  6 53 93 39184  5
MAX LVORI            1  1  1  2  2  3  4  3  1  1  1  2  2  2  3  3  1  1  1  2
STABILITY            A  A  A  G  G  G  F  A  A  B  B  E  E  E  E  C  C  C  B  F
CEILING              None  None  None  None  None  None  6000 14700  2100 18900
STA PRES            29.37 29.33 29.35 29.35 29.35 29.25 29.21 29.18 29.36 29.40


Date          Mon 04/20/26Tue 04/21/26Wed 04/22/26Thu 04/23/26
UTC 6hrly     06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly     02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20

MIN/MAX TEMP       42      68      37      72      50      82      54      84
TEMP          45 44 65 61 44 41 68 66 55 54 80 75 61 58 82 77
DEWPT         26 27 25 23 26 25 28 31 33 35 39 39 41 47 47 47
RH            47 51 22 23 49 52 22 27 43 48 23 27 48 67 29 35
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW CL FW FW FW FW FW FW FW SC SC SC SC FW FW FW
POP 12HR           10       0       0       0       0       5       5      10

$$


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

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