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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Thu Apr 16 2026
NCZ019-162000-
RAWS 312001
36.23N 81.32W Elev. 2380 ft
731 AM EDT Thu Apr 16 2026
Date Thu 04/16/26 Fri 04/17/26 Sat 04/18/26
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 84 61 83 59 85
TEMP 63 76 82 83 74 69 66 63 63 73 81 82 75 66 62 60 62 77 84 82 76
DEWPT 51 49 48 50 49 52 55 54 54 52 49 47 49 48 48 48 50 52 52 53 54
MAX/MIN RH 28 76 29 66 33
RH 65 39 31 32 41 55 68 72 72 48 33 29 40 52 60 64 65 42 33 37 46
WIND DIR W W SW SW W NW W W NW NW NW NW W NW NW NW NW S SW SW SW
WIND SPD 2 3 5 6 5 5 5 4 3 3 4 4 2 2 2 1 1 2 6 8 5
CLOUDS SC FW FW FW SC SC B1 SC SC FW FW FW FW FW SC SC SC SC SC B1 B2
CLOUDS(%) 32 15 24 14 30 38 53 43 30 11 16 18 10 18 32 31 35 31 49 61 71
VSBY 10 10 10 10 10 7 7 7 10 10 10 10 10 10 10 10 10 10 7 7 7
POP 12HR 0 30 10 0 20
RAIN SHWRS IS SC IS IS IS SC
TSTMS IS IS
MIX HGT <1 5 7 8 <1 <1 <1 <1 1 5 7 7 <1 <1 <1 <1 <1 4 7 6 1
T WIND DIR NW SW SW W SW W NW NW NW NW NW NW NW NW NW NW NW SW SW SW SW
T WIND SPD 5 11 13 12 9 10 13 13 9 21 20 11 3 2 3 3 3 9 11 13 12
DISPERSION PR PR PR VP VP VP VP VP PR
ADI 6 73121102 4 5 9 9 12127170101 2 1 2 2 3 45 88 90 8
MAX LVORI 3 1 1 1 2 3 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY A A A B F F E E A A A A G G G G A A B B E
CEILING None None None None None None None None None 13100
STA PRES 27.94 27.86 27.87 27.88 27.92 27.88 27.89 27.89 27.88 27.81
Date Sun 04/19/26Mon 04/20/26Tue 04/21/26Wed 04/22/26
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 51 62 40 63 39 70 48 75
TEMP 66 53 60 54 44 41 60 55 42 42 67 63 52 52 73 68
DEWPT 54 45 32 27 24 23 23 24 24 25 31 33 34 36 40 41
RH 65 74 35 35 45 48 24 30 48 50 26 32 50 54 30 37
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 SC FW CL CL FW CL CL SC SC SC SC SC SC
POP 12HR 50 40 10 5 0 0 5 10
RAIN SHWRS SC SC 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