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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Wed Apr 15 2026
NCZ001-160800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
431 PM EDT Wed Apr 15 2026
Date 04/15/26 Thu 04/16/26 Fri 04/17/26 Sat
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 72 55 71 54
TEMP 74 69 64 61 59 59 65 69 71 65 62 59 57 56 62 68 70 65 58 56 55 58
DEWPT 44 39 44 44 43 44 44 44 44 41 48 51 53 53 49 46 45 47 47 46 46 47
MIN/MAX RH 62 37 91 41 73
RH 34 33 48 53 55 57 46 40 38 41 60 75 86 90 62 45 41 52 67 69 72 67
WIND DIR SW SW W W W W W W W W W W W NW NW W W W W W SW S
WIND SPD 8 8 8 10 11 11 13 11 11 10 12 17 16 14 13 10 10 9 8 6 5 6
WIND GUST 26 21 21
CLOUDS FW FW SC SC B1 SC FW FW FW B1 B1 B1 B1 SC FW SC FW FW FW SC SC SC
CLOUDS(%) 11 23 27 32 59 31 25 13 8 53 58 58 58 42 24 30 20 10 23 33 34 39
VSBY 10 10 10 10 10 10 10 10 10 7 7 7 7 10 10 10 10 10
POP 12HR 0 20 40 10 0
RAIN SHWRS IS SC SC SC
MIX HGT 6 <1 <1 <1 <1 <1 3 5 5 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR SW S SW W W W W W W W W NW NW NW NW NW NW NW
T WIND SPD 9 9 3 4 6 14 19 19 16 10 27 21 14 12 19 16 12 6
DISPERSION PR PR FR FR FR FR GD GD PR PR PR PR
ADI 61 6 2 3 6 11 57 82 68 9 25 20 13 10 62101 79 5
MAX LVORI 1 2 2 2 3 2 1 1 1 2 2 3 4 5 1 1 1 2
STABILITY B E E E D C C C C D D D D C C B B E
CEILING None None None None 1100 None None None None
STA PRES 26.76 26.73 26.75 26.67 26.68 26.68 26.73 26.70
Date 04/18Sun 04/19/26Mon 04/20/26Tue 04/21/26Wed 04/22/26
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 75 44 53 33 51 35 62 44 63
TEMP 74 69 59 48 52 48 37 35 49 45 37 39 59 54 47 49 61 58
DEWPT 49 52 50 44 31 26 22 21 19 21 21 24 29 32 32 36 38 38
RH 41 55 72 86 44 42 54 56 30 38 52 54 32 43 56 61 42 47
WIND SPD <15 <15 15> 15> <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B2 B2 B1 FW FW CL FW CL CL FW FW FW FW FW FW
POP 12HR 20 60 40 10 5 0 0 5 10
RAIN SHWRS IS SC NM SC IS
TSTMS 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