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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed Apr 8 2026
NCZ001-082000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 AM EDT Wed Apr 8 2026
Date Wed 04/08/26 Thu 04/09/26 Fri 04/10/26
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 49 31 58 39 66
TEMP 40 45 48 43 39 36 34 36 45 54 57 50 43 41 39 42 57 64 63 55
DEWPT 18 20 22 22 23 20 22 24 25 28 29 29 30 28 29 31 35 35 36 38
MAX/MIN RH 36 69 34 68 34
RH 41 36 35 43 52 52 61 61 45 36 34 44 60 59 67 65 43 34 36 53
WIND DIR E SE SE SE SE SE SE S SE SE SE S S S W W W W W W
WIND SPD 6 10 9 9 8 11 8 6 5 5 6 8 5 5 5 6 5 5 6 8
CLOUDS FW SC B1 B1 SC B1 SC SC SC SC FW FW CL FW FW CL CL CL CL FW
CLOUDS(%) 21 42 57 63 46 62 38 47 33 32 25 12 5 6 6 5 3 5 4 9
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 0 0
MIX HGT 2 2 2 <1 <1 <1 <1 <1 <1 2 2 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR SE SE SE SE SE SE SE SE S E S S S SW W NW NW W W SW
T WIND SPD 10 8 9 14 11 6 4 4 3 1 1 6 2 2 2 3 6 6 6 3
DISPERSION PR PR FR PR PR PR PR PR PR
ADI 21 25 29 13 8 6 3 5 4 4 3 5 1 1 1 4 22 42 41 2
MAX LVORI 2 2 2 2 2 2 3 3 2 2 2 2 3 3 3 3 2 1 1 2
STABILITY B B B D E D E B A A B E F F F B A A B E
CEILING None None None None None None None None None None
STA PRES 27.00 26.99 27.02 26.99 27.02 26.96 26.98 26.94 26.97 26.91
Date Sat 04/11/26Sun 04/12/26Mon 04/13/26Tue 04/14/26
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 45 67 47 68 50 68 53 71
TEMP 47 48 66 59 50 49 65 61 53 52 66 63 57 56 68 65
DEWPT 36 37 42 45 45 46 44 43 44 46 44 44 46 49 50 51
RH 65 65 42 60 83 89 46 51 71 80 45 50 67 77 52 60
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC SC FW FW FW SC SC SC SC B1 SC SC SC SC
POP 12HR 0 20 0 0 0 0 0 10
RAIN SHWRS 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