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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 AM EDT Wed Apr 15 2026
NCZ003-152000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
301 AM EDT Wed Apr 15 2026
Date Wed 04/15/26 Thu 04/16/26 Fri 04/17/26
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 88 58 87 59 86
TEMP 60 61 78 86 87 78 69 65 61 62 78 85 86 80 70 65 62 61 75 82 85 78
DEWPT 49 48 50 49 51 53 52 51 50 51 54 54 54 55 53 52 54 55 56 53 50 51
MAX/MIN RH 28 70 32 84 30
RH 67 62 37 28 29 42 55 60 67 67 43 35 34 42 55 63 75 81 52 37 30 39
WIND DIR NW NW W SW S SW W NW NW NW W SW SW W W W NW NW NW NW NW NW
WIND SPD 1 1 2 3 4 1 1 1 1 1 2 5 5 2 2 2 2 2 3 4 3 1
CLOUDS FW SC FW FW FW FW SC B1 B1 SC SC FW FW SC SC SC SC FW FW FW FW FW
CLOUDS(%) 10 28 20 18 25 18 37 60 54 35 42 24 21 30 30 45 47 15 13 16 24 16
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 7 7 7 7 10 10 10 10
POP 12HR 0 0 5 20 10
RAIN SHWRS IS IS IS IS
MIX HGT <1 <1 3 7 7 <1 <1 <1 <1 <1 5 7 7 1 <1 <1 <1 1 4 8 8 <1
T WIND DIR NW NW W SW SW SW SW W NW W W SW SW SW W NW NW NW NW NW NW W
T WIND SPD 3 3 9 9 13 8 8 3 4 4 10 12 12 8 4 9 8 16 17 13 12 3
DISPERSION VP VP VP VP VP VP VP VP VP VP
ADI 2 3 40 78122 4 4 2 2 5 61106103 4 2 4 4 23 97128120 2
MAX LVORI 3 3 1 1 1 2 2 3 3 3 1 1 1 2 3 3 3 4 1 1 1 2
STABILITY G A A A A G G F F A A A A G G F F A A A A G
CEILING None None None None None None None None None None
STA PRES 28.22 28.16 28.14 28.13 28.13 28.05 28.07 28.08 28.12 28.07
Date Sat 04/18/26Sun 04/19/26Mon 04/20/26Tue 04/21/26
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 57 89 52 70 38 66 37 72
TEMP 60 60 86 81 65 58 69 63 47 41 61 57 40 42 69 66
DEWPT 49 49 53 55 54 49 40 33 26 22 22 22 24 27 33 35
RH 67 67 32 41 68 72 35 32 43 46 22 25 52 55 26 32
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B1 B1 B2 B1 FW CL CL CL CL CL FW SC
POP 12HR 0 10 30 40 10 0 0 0
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
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