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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Apr 15 2026
VAZ046-152000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 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 91 65 90 65 87
TEMP 82 88 90 83 76 72 67 67 81 88 89 83 75 72 67 66 78 84 87 79
DEWPT 55 52 51 52 52 51 51 53 54 53 52 52 52 53 54 56 56 54 51 50
MAX/MIN RH 26 62 28 71 30
RH 40 29 26 34 43 48 56 61 39 30 28 34 45 51 63 70 47 36 29 36
WIND DIR W SW SW SW SW SW SW SW W SW SW SW SW W W W W W W NW
WIND SPD 6 8 9 5 6 6 5 5 8 10 10 6 6 6 5 5 6 8 6 3
WIND GUST 17 17
CLOUDS FW FW FW FW FW SC B1 B1 B1 SC SC SC SC SC B1 SC SC SC SC FW
CLOUDS(%) 16 23 7 24 22 46 63 67 53 45 34 28 31 45 52 35 35 30 30 11
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 7 7 7 7 7 7
POP 12HR 0 0 0 20 20
RAIN SHWRS IS IS IS IS IS IS
MIX HGT 3 7 7 <1 <1 <1 <1 <1 4 6 8 <1 <1 <1 <1 <1 4 8 8 <1
T WIND DIR W SW SW SW SW SW SW SW W SW SW SW SW W W W NW NW NW W
T WIND SPD 11 11 16 6 6 6 5 6 17 17 18 5 6 8 8 12 17 13 14 3
DISPERSION PR PR PR PR PR PR PR PR VP
ADI 48 83127 3 3 5 4 7 76121150 3 3 5 5 12 85112128 2
MAX LVORI 1 1 1 2 2 2 3 3 1 1 1 2 2 2 3 3 1 1 1 2
STABILITY B B B F F E E A B B B F F E E A B B B G
CEILING None None None None None None None None None None
STA PRES 29.35 29.28 29.27 29.26 29.26 29.18 29.19 29.20 29.25 29.21
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 59 90 59 73 42 64 37 73
TEMP 64 63 87 83 70 63 71 66 50 45 62 58 44 42 69 67
DEWPT 52 53 53 52 54 53 45 35 29 24 20 19 23 26 31 33
RH 65 70 31 34 57 70 39 32 44 43 20 22 43 53 24 28
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC SC B1 B2 B1 SC CL FW FW CL CL FW FW
POP 12HR 5 5 20 50 20 5 0 0
RAIN SHWRS IS IS SC SC 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