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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 PM EDT Thu Apr 16 2026
NCZ003-162000-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
131 PM 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 86 61 84 59 87
TEMP 83 85 78 71 67 64 63 75 82 84 75 68 62 59 61 76 85 87 81
DEWPT 49 47 50 51 55 56 56 55 48 46 48 49 49 49 50 52 54 53 54
MAX/MIN RH 27 81 27 70 31
RH 31 27 37 49 65 75 78 50 31 27 38 51 62 69 67 43 35 31 39
WIND DIR SW SW SW W W NW NW NW NW NW NW NW N N N S SW SW SW
WIND SPD 11 11 6 6 5 5 5 5 5 6 3 3 3 2 2 4 8 9 8
CLOUDS CL FW FW SC B1 SC FW FW FW FW FW FW SC SC SC SC SC B1 B1
CLOUDS(%) 4 10 19 46 51 30 19 8 11 14 19 16 35 26 34 35 47 62 62
VSBY 10 10 10 10 10 9 10 10 10 10 10 10 10 10 10 10 10 10 7
POP 12HR 0 20 5 0 10
RAIN SHWRS IS SC
TSTMS IS
MIX HGT 6 8 <1 <1 <1 <1 <1 4 8 8 <1 <1 <1 <1 <1 3 7 9 <1
T WIND DIR SW SW SW SW W NW W NW W NW NW NW NW N N SW SW SW SW
T WIND SPD 12 19 6 6 5 5 4 12 12 13 4 3 2 2 2 10 16 17 9
DISPERSION PR PR PR PR VP VP VP VP PR
ADI 60 80 5 3 3 4 4 71118124 2 2 1 1 2 44126 90 8
MAX LVORI 1 1 2 2 3 4 3 1 1 1 2 3 3 3 3 1 1 1 2
STABILITY C C E F F E A A A A G G G G A A B C D
CEILING None None None None None None None None 4400
STA PRES 28.89 28.89 28.92 28.96 28.91 28.93 28.92 28.91 28.84
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 53 65 40 65 37 70 47 77
TEMP 68 55 63 57 46 42 61 58 41 41 66 65 52 51 75 71
DEWPT 54 47 34 28 26 24 22 23 25 23 30 33 35 37 42 42
RH 61 74 34 33 45 48 22 26 52 48 26 30 52 59 31 35
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 SC FW CL CL FW CL CL FW SC FW SC SC SC
POP 12HR 40 30 10 5 0 0 5 10
RAIN SHWRS SC SC SC IS
TSTMS 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