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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EST Sat Nov 22 2025
NCZ001-230900-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
231 PM EST Sat Nov 22 2025
Date 11/22/25 Sun 11/23/25 Mon 11/24/25 Tue
UTC 3hrly 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12
EST 3hrly 16 19 22 01 04 07 10 13 16 19 22 01 04 07 10 13 16 19 22 01 04 07
MIN/MAX TEMP 41 51 34 51 40
TEMP 52 49 48 46 44 42 43 48 47 42 40 39 37 35 44 50 47 41 41 41 41 43
DEWPT 48 47 46 45 42 38 37 37 37 36 35 32 28 24 24 26 27 29 30 31 33 35
MIN/MAX RH 96 61 83 39 81
RH 86 93 93 96 93 86 79 65 68 79 82 76 70 64 45 39 45 62 65 67 73 73
WIND DIR W NW NW NW NW NW NW NW NW NW NW NW NW W S S S S S S S S
WIND SPD 11 6 9 10 12 13 17 16 16 11 10 9 5 4 4 8 6 6 9 10 12 14
CLOUDS SC B1 B2 B1 SC FW FW FW FW FW FW CL FW FW FW SC SC SC B1 B2 B2 OV
CLOUDS(%) 49 63 73 67 31 18 7 8 9 16 7 4 7 16 21 33 45 47 65 79 86 88
VSBY 10 10 9 7 9 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 0 0 0 10
RAIN L
MIX HGT 2 <1 <1 <1 <1 <1 <1 2 2 <1 <1 <1 <1 <1 1 2 1 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW NW NW NW NW S S S S
T WIND SPD 13 9 12 17 11 12 14 21 21 16 10 8 5 3 10 13 10 8
DISPERSION PR PR FR FR FR FR PR PR PR PR FR FR
ADI 26 6 11 15 10 14 18 43 40 11 7 5 3 3 13 34 16 5
MAX LVORI 4 6 5 5 5 4 3 1 1 4 4 4 3 3 2 1 2 3
STABILITY D E D D D D D D D E E E F C C C C E
CEILING 400 None None None None None None None 26500
STA PRES 26.67 26.69 26.75 26.74 26.79 26.83 26.89 26.86
Date 11/25Wed 11/26/25Thu 11/27/25Fri 11/28/25Sat 11/29/25
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EST 6hrly 13 19 01 07 13 19 01 07 13 19 01 07 13 19 01 07 13 19
MAX/MIN TEMP 52 48 52 27 33 22 32 22 39
TEMP 46 50 51 51 49 41 32 27 32 27 25 23 31 25 24 23 38 28
DEWPT 45 47 50 48 44 32 24 19 12 11 13 12 9 10 14 13 13 17
RH 96 89 96 89 83 70 72 71 43 50 60 62 39 52 65 65 35 63
WIND SPD <15 <15 15> 15> 15> 15> <15 <15 <15
AVG CLOUDS OV OV OV B2 B2 B1 SC SC FW FW FW SC SC SC FW SC SC SC
POP 12HR 70 80 30 5 0 5 5 5 10
RAIN L L D L C 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