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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1101 AM EST Wed Nov 19 2025
NCZ003-192100-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
1101 AM EST Wed Nov 19 2025
Date Wed 11/19/25 Thu 11/20/25 Fri 11/21/25
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EST 3hrly 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19
MAX/MIN TEMP 70 46 61 51 68
TEMP 66 67 58 54 51 49 47 52 59 62 55 52 51 51 52 56 64 67 61
DEWPT 51 52 53 52 48 46 45 46 48 48 49 49 49 50 50 54 55 57 56
MAX/MIN RH 58 93 60 96 69
RH 58 59 83 93 89 89 93 80 67 60 80 89 93 96 93 93 73 70 84
WIND DIR NW N NE E E E E E S S S S SW SW SW SW SW SW SW
WIND SPD 4 2 2 3 5 4 2 2 2 2 1 1 1 2 2 2 4 3 2
CLOUDS SC SC B1 B1 B2 B2 OV B1 SC SC B1 B1 B2 OV OV B2 B2 B2 B2
CLOUDS(%) 39 37 55 64 73 87 91 61 49 50 67 64 83 94 95 85 81 78 87
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 5 0 20 20
RAIN S S S S C
MIX HGT 3 2 <1 <1 <1 <1 <1 1 2 2 <1 <1 <1 <1 <1 <1 1 1 <1
T WIND DIR E NE E E E E E SE S S SE S S S S SW SW SW SW
T WIND SPD 2 2 5 9 6 5 3 3 4 3 3 3 4 5 8 8 9 8 3
DISPERSION VP VP PR VP VP VP VP VP VP
ADI 8 5 3 4 5 4 4 5 11 8 2 2 2 3 6 6 14 15 2
MAX LVORI 3 3 5 6 6 6 6 4 3 3 5 7 6 6 6 6 3 3 5
STABILITY B B F F E E C C B B F F F F C C D C F
CEILING None 1600 1300 None None 1300 1200 500 400
STA PRES 29.02 29.07 29.09 29.10 29.05 29.04 29.00 28.98 28.90
Date Sat 11/22/25Sun 11/23/25Mon 11/24/25Tue 11/25/25
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MIN/MAX TEMP 55 72 48 66 45 65 46 61
TEMP 58 56 70 59 53 49 63 58 50 45 63 56 49 46 58 55
DEWPT 56 54 57 53 50 47 48 47 44 43 43 42 42 41 41 43
RH 93 93 63 80 89 93 58 67 80 93 48 59 77 83 53 64
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC SC SC SC SC SC SC SC SC B1 B1 B2 B2
POP 12HR 50 30 10 10 10 10 20 20
RAIN C C C S S S S
$$
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