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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EST Sat Feb 21 2026
NCZ003-220900-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
231 PM EST Sat Feb 21 2026
Date 02/21/26 Sun 02/22/26 Mon 02/23/26 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 37 43 24 35 21
TEMP 60 55 51 48 43 39 42 43 39 32 29 27 25 24 29 34 35 31 28 25 24 23
DEWPT 43 45 46 43 38 35 32 26 20 17 15 14 13 13 14 14 13 13 13 12 12 11
MIN/MAX RH 86 45 61 40 64
RH 53 69 83 83 82 85 67 51 46 53 55 57 60 62 53 43 40 47 53 57 60 59
WIND DIR S N N NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD 1 0 0 2 3 6 10 11 13 11 13 13 14 16 17 14 14 10 10 10 8 5
WIND GUST 14 20 23 25 31 34 39 40 41 41 40 34 34 33 35 32 27 19
CLOUDS B1 OV OV OV OV B2 SC SC B1 SC SC SC SC B1 B1 B1 B1 SC SC SC SC SC
CLOUDS(%) 68 90 96100100 79 45 49 58 35 35 42 50 54 56 60 59 47 32 33 39 33
VSBY 10 10 9 8 8 8 8 9 9 9 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 80 20 20 5 5
RAIN C D C S S
SNOW S S S S
MIX HGT 3 <1 1 1 1 2 3 5 5 3 3 3 3 3 4 5 5 3
T WIND DIR SE SE SE SE N N NW NW NW NW NW NW NW NW NW NW NW NW
T WIND SPD 2 6 9 8 16 25 24 27 40 42 37 43 41 39 43 41 36 39
DISPERSION VP VP VP VP FR FR FR GD FR FR FR PR
ADI 7 3 4 9 18 48 83111121 29 51 59 56 92127128115 53
MAX LVORI 2 3 5 4 4 4 1 1 1 2 1 1 1 1 1 1 1 1
STABILITY C F F D D D C C D E D D D D D D D D
CEILING 1800 700 None None None None 35000 None None
STA PRES 28.04 27.99 27.97 27.96 27.96 27.92 27.95 28.01
Date 02/24Wed 02/25/26Thu 02/26/26Fri 02/27/26Sat 02/28/26
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 45 32 55 44 56 38 56 34 59
TEMP 41 37 33 34 52 49 47 45 54 52 46 39 52 46 39 35 55 50
DEWPT 11 15 18 21 30 35 40 41 46 44 40 34 31 33 31 30 36 38
RH 29 40 53 58 43 58 76 86 74 74 79 82 44 60 73 82 49 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B2 B1 B2 B2 B2 B2 B2 B1 SC SC FW FW FW FW SC
POP 12HR 0 0 5 30 60 60 20 10 10
RAIN C C C S
RAIN SHWRS NM NM
$$
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