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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EST Sat Feb 21 2026
NCZ003-220900-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
231 AM EST Sat Feb 21 2026
Date 02/20/26 Sat 02/21/26 Sun 02/22/26 Mon
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 48 58 40 46 28
TEMP 52 49 50 55 58 55 51 50 46 42 43 44 41 35 33 31 29 28
DEWPT 31 34 38 40 42 42 44 44 42 38 34 28 20 16 16 15 14 14
MIN/MAX RH 62 42 88 43 55
RH 44 56 63 57 55 61 77 80 86 86 70 53 42 45 49 51 53 55
WIND DIR W NW NW W S S S NW N N NW NW NW NW NW NW NW NW
WIND SPD 4 4 3 2 2 2 3 5 8 9 9 12 17 19 17 17 17 16
WIND GUST 27 35 32 31 29 26
CLOUDS OV OV OV B2 B1 B1 OV OV OV OV B1 B1 SC SC SC SC SC SC
CLOUDS(%) 100100 88 82 61 62100100100100 59 57 41 35 27 29 28 33
VSBY 10 10 10 10 10 10 10 6 7 9 10 9 10 10 10 10 10 10
POP 12HR 30 40 70 30 5
FLURRIES SC SC SC SC
RAIN C C C L L C C
SPRINKLES SC
MIX HGT <1 <1 <1 2 2 <1 <1 <1 1 1 3 5 6 4 3 4 3 3
T WIND DIR W N NW W SW SW S S SW N N NW NW NW NW NW NW NW
T WIND SPD 4 6 6 4 4 3 3 5 5 18 23 23 32 34 20 34 33 32
DISPERSION VP VP VP PR PR GD GD GD GD
ADI 3 8 5 10 12 2 3 5 5 30 58 71103 46 28 46 45 83
MAX LVORI 2 3 3 2 2 3 4 4 5 4 3 1 1 1 2 1 1 1
STABILITY E D C C C F D D D D D D D D D D D D
CEILING 5800 6200 400 300 2800 None None None
STA PRES 28.99 28.97 28.94 28.85 28.84 28.86 28.87 28.84
Date 02/23Tue 02/24/26Wed 02/25/26Thu 02/26/26Fri 02/27/26
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 39 24 45 30 55 45 58 40 57
TEMP 37 32 28 25 40 39 35 31 50 51 49 46 56 52 47 41 53 49
DEWPT 13 11 11 11 11 16 18 20 26 31 37 41 46 44 41 33 30 31
RH 37 41 48 55 30 39 49 63 39 46 63 83 69 74 79 73 41 50
WIND SPD 15> <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC SC B1 B1 B2 B2 B2 B2 B1 B1 B1 SC
POP 12HR 5 0 0 0 0 20 60 60 20
RAIN SHWRS IS SC NM NM SC 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