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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
201 AM EST Fri Feb 20 2026
NCZ001-210900-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
201 AM EST Fri Feb 20 2026
Date 02/19/26 Fri 02/20/26 Sat 02/21/26 Sun
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 50 55 39 48 26
TEMP 53 53 52 51 52 47 44 42 40 41 43 44 47 45 42 38 34 29
DEWPT 51 51 45 32 28 25 23 21 26 33 35 37 36 36 35 34 31 28
MIN/MAX RH 99 39 73 53 97
RH 93 93 77 48 39 42 43 43 57 73 73 76 65 70 76 85 89 96
WIND DIR SW W W W W W W W W W NW W W W NW NW NW NW
WIND SPD 12 16 26 27 27 26 23 21 19 11 8 6 8 5 4 6 11 19
WIND GUST 39 39 16 18 25 34
CLOUDS OV OV B1 FW FW FW SC B1 B1 B2 B2 B1 SC SC B1 B2 B2 B2
CLOUDS(%) 100100 63 20 15 22 45 54 53 87 74 51 37 44 65 79 84 85
VSBY 5 3 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 50 20 30 60
DRIZZLE ?
RAIN S C S S L
RAIN SHWRS SC
SNOW L C
Obvis F PF
MIX HGT <1 <1 3 4 4 1 <1 <1 <1 <1 <1 2 2 <1 <1 <1 <1 2
T WIND DIR S W W W W W W NW NW NW NW NW SW N N NW NW NW
T WIND SPD 5 8 39 40 42 16 14 11 24 6 6 6 1 2 3 4 9 23
DISPERSION FR GD GD GD GD PR VP PR FR
ADI 5 9 87112120 14 13 10 22 8 8 12 3 2 2 3 8 43
MAX LVORI 6 6 3 1 1 2 2 2 2 3 3 4 3 3 4 5 5 4
STABILITY D D D D D D D D D D D D B E E E D D
CEILING None None None 3200 300 None 300 200
STA PRES 26.45 26.49 26.55 26.59 26.60 26.58 26.59 26.56
Date 02/22Mon 02/23/26Tue 02/24/26Wed 02/25/26Thu 02/26/26
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 29 17 22 16 31 23 43 35 44
TEMP 26 24 21 19 19 20 19 17 27 25 25 28 40 37 38 38 42 40
DEWPT 21 14 13 11 12 11 11 10 11 12 13 15 22 25 30 34 35 31
RH 81 65 71 70 74 67 70 73 50 57 60 58 48 61 73 85 76 70
WIND SPD 15> 15> 15> 15> <15 <15 15> 15> 15>
AVG CLOUDS B2 B2 B2 B2 B2 B2 B2 B1 SC SC SC B1 B2 B2 B2 B2 B2 B1
POP 12HR 30 60 40 5 0 0 5 50 40
RAIN C C C C
SNOW C S L 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
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