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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 AM EDT Tue Apr 14 2026
VAZ046-142000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
901 AM EDT Tue Apr 14 2026
Date Tue 04/14/26 Wed 04/15/26 Thu 04/16/26
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 89 64 92 64 91
TEMP 79 85 87 80 74 69 66 67 83 89 91 82 76 71 67 67 83 89 91 83
DEWPT 52 48 47 54 54 54 55 56 56 54 53 52 51 51 51 53 55 53 52 51
MAX/MIN RH 24 70 27 62 27
RH 39 28 25 41 50 59 68 68 40 30 28 35 42 49 56 61 38 29 27 33
WIND DIR W SW SW SW SW SW W W W SW SW SW SW SW SW SW W SW SW SW
WIND SPD 6 10 10 6 6 5 5 5 6 8 8 5 6 6 6 5 6 9 10 8
CLOUDS SC FW FW SC FW FW FW FW FW SC SC SC SC SC SC SC SC B1 SC SC
CLOUDS(%) 37 20 9 33 21 15 13 6 11 28 28 34 40 44 46 42 47 58 45 41
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 0 0
MIX HGT 4 7 8 <1 <1 <1 <1 <1 3 6 7 <1 <1 <1 <1 <1 4 7 8 <1
T WIND DIR W W SW SW SW SW SW SW W SW SW SW SW SW SW SW W SW SW SW
T WIND SPD 16 14 17 6 6 3 3 4 9 12 18 6 6 8 6 5 17 14 18 3
DISPERSION PR PR PR PR PR PR PR PR PR
ADI 70110137 3 3 2 2 4 35 84138 3 3 5 5 6 88111152 3
MAX LVORI 1 1 1 2 2 3 3 3 1 1 1 2 2 2 3 3 1 1 1 2
STABILITY B B B F F F F A B B B F F E E A B B B D
CEILING None None None None None None None None None
STA PRES 29.35 29.34 29.35 29.36 29.29 29.29 29.26 29.27 29.20
Date Fri 04/17/26Sat 04/18/26Sun 04/19/26Mon 04/20/26
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 65 88 59 90 63 78 44 70
TEMP 73 67 85 79 65 63 88 84 71 66 76 68 52 48 67 63
DEWPT 51 54 53 50 51 52 51 51 53 52 46 35 31 31 25 25
RH 46 63 33 36 60 67 28 32 53 61 34 29 44 51 20 23
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW FW SC SC B1 B1 B1 B1 FW FW CL CL
POP 12HR 10 10 0 5 20 30 10 5
RAIN SHWRS IS 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