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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Wed Apr 15 2026
VAZ024-152000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
131 PM 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 92 63 90 63 87
TEMP 89 91 82 75 71 67 68 79 85 89 82 74 68 64 65 77 84 86 78
DEWPT 51 49 48 50 49 49 51 52 49 49 48 51 54 56 57 56 52 50 49
MAX/MIN RH 23 62 25 77 29
RH 27 24 31 41 46 52 54 39 29 25 31 44 61 75 75 48 33 29 36
WIND DIR SW SW SW W W W W W SW SW SW W W W W W W W W
WIND SPD 5 8 5 4 2 2 2 5 9 10 5 4 2 2 2 4 5 4 2
WIND GUST 16
CLOUDS FW FW FW SC SC SC SC SC FW FW SC SC B1 B1 SC SC FW FW FW
CLOUDS(%) 9 14 25 33 47 48 41 31 12 21 39 49 63 55 33 28 21 13 13
VSBY 10 10 10 10 10 10 10 10 10 10 7 7 7 7 7 7 10 10 10
POP 12HR 0 0 10 20 20
RAIN SHWRS IS IS IS IS
MIX HGT 6 8 <1 <1 <1 <1 <1 4 7 8 <1 <1 <1 <1 1 5 8 7 <1
T WIND DIR W SW S SW W W W W W SW SW W W W W NW NW NW NW
T WIND SPD 12 16 5 4 3 2 1 6 14 17 10 6 13 9 10 21 17 14 5
DISPERSION PR VP VP VP PR VP VP VP VP
ADI 99130 3 2 2 1 1 37116145 5 5 6 4 14134158129 3
MAX LVORI 1 1 2 2 2 2 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY A B F F F F A A B B F E F F A A A A G
CEILING None None None None None None None None None
STA PRES 28.50 28.50 28.49 28.49 28.40 28.41 28.43 28.47 28.44
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 90 53 70 38 64 35 74
TEMP 62 60 87 82 68 55 68 63 45 39 61 56 40 40 69 66
DEWPT 50 51 54 54 55 49 38 29 26 23 20 20 23 25 31 35
RH 65 72 32 38 63 80 33 27 47 52 20 24 50 55 24 32
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC B1 B2 B1 B1 B1 FW FW FW FW CL FW FW FW
POP 12HR 5 20 50 40 20 5 0 0
RAIN SHWRS IS SC SC SC IS 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
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