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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Tue Apr 14 2026
NCZ001-150800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
431 PM EDT Tue Apr 14 2026
Date 04/14/26 Wed 04/15/26 Thu 04/16/26 Fri
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 56 76 57 75 55
TEMP 68 64 60 59 58 59 66 73 74 67 62 60 58 59 66 72 74 68 62 59 58 56
DEWPT 47 49 49 48 46 44 43 42 43 47 48 47 47 49 48 48 47 48 47 48 51 52
MIN/MAX RH 68 32 70 39 85
RH 47 58 67 67 64 57 43 33 33 49 60 62 67 69 52 42 38 49 58 67 77 86
WIND DIR W W W W W W W W W W W W W W W W W W W W W W
WIND SPD 12 10 10 12 13 14 11 8 8 9 10 10 12 12 13 10 11 13 14 16 17 17
CLOUDS SC FW FW FW FW FW FW FW SC SC SC B1 SC SC SC SC SC SC SC SC SC SC
CLOUDS(%) 33 14 8 25 12 17 15 16 40 45 45 58 49 45 39 44 27 31 30 40 47 33
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 0 0 5 20
RAIN SHWRS IS IS IS IS
MIX HGT 5 <1 <1 <1 <1 <1 2 5 6 <1 <1 <1 <1 <1 3 5 5 <1
T WIND DIR W W W W NW NW W W SW S SW W NW W W W W W
T WIND SPD 13 3 3 4 5 9 14 8 8 5 5 4 4 11 16 13 17 10
DISPERSION FR FR FR FR PR FR FR FR FR GD GD GD
ADI 55 2 2 4 5 7 35 44 52 5 5 4 4 9 52 84 74 9
MAX LVORI 1 3 3 3 3 3 1 1 1 2 3 3 3 3 1 1 1 2
STABILITY C E E D D C C B B D D D D C C B C D
CEILING None None None None None None None None None
STA PRES 26.81 26.78 26.82 26.78 26.76 26.73 26.74 26.70
Date 04/17Sat 04/18/26Sun 04/19/26Mon 04/20/26Tue 04/21/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 72 55 78 47 55 33 53 36 59
TEMP 70 66 56 59 77 69 60 50 53 48 40 35 50 47 38 40 56 52
DEWPT 47 46 45 47 47 50 49 47 35 29 25 23 20 21 23 24 26 27
RH 44 48 66 64 35 51 67 89 50 47 55 61 30 35 54 52 31 38
WIND SPD <15 <15 <15 <15 15> 15> <15 <15 <15
AVG CLOUDS FW SC SC SC SC B1 B1 B2 B2 B1 FW FW CL CL FW FW FW FW
POP 12HR 10 0 10 30 50 10 5 0 5
RAIN SHWRS 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