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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EST Fri Feb 20 2026
VAZ046-210900-
RAWS 441101
37.39N 78.80W Elev. 804 ft
231 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 41 68 44 61 39
TEMP 41 44 46 60 66 60 54 49 46 45 52 57 60 52 47 44 42 40
DEWPT 40 42 43 49 44 33 28 30 30 30 32 32 32 34 35 35 36 36
MIN/MAX RH 97 36 58 34 85
RH 96 93 89 67 45 36 36 48 53 55 46 38 35 50 63 70 79 85
WIND DIR NE NE SW SW SW W W W W W W W SW W NW NE NE NE
WIND SPD 3 3 4 12 13 12 11 10 10 4 4 3 5 2 2 4 6 8
WIND GUST 17 14 13
CLOUDS OV OV OV SC FW FW SC B1 B2 OV B2 B1 SC SC SC B1 B2 OV
CLOUDS(%) 100100100 45 6 9 38 55 80 94 75 62 37 39 50 57 83 97
VSBY 5 1 3 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 90 50 5 10 60
RAIN C C L L
RAIN SHWRS SC IS
Obvis PF PF
MIX HGT <1 <1 <1 2 5 1 1 <1 1 <1 2 2 2 <1 <1 <1 <1 <1
T WIND DIR NE W W SW W W W W W W W NW S S SE E NE E
T WIND SPD 4 4 9 9 37 12 12 10 19 14 8 6 3 4 1 1 2 8
DISPERSION VP FR FR FR FR VP VP VP PR
ADI 4 5 10 26152 11 8 9 18 12 17 18 9 2 1 1 2 9
MAX LVORI 7 7 5 3 1 2 2 2 2 2 2 2 2 2 3 4 4 4
STABILITY D D D C C D E D D C C C B G F E E D
CEILING 500 None None 10800 7900 None None 3800
STA PRES 29.01 28.98 29.13 29.22 29.27 29.29 29.31 29.27
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 45 32 44 26 45 29 51 41 57
TEMP 44 40 35 33 43 37 32 27 43 38 31 32 48 48 46 44 55 52
DEWPT 35 26 22 19 19 17 17 16 16 17 19 20 25 27 32 36 39 35
RH 70 57 59 56 38 44 53 63 33 42 61 61 40 44 58 73 55 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B2 B1 B1 B1 SC FW FW FW SC B1 B2 B2 B2 B2 B2 B1
POP 12HR 60 10 5 0 0 0 5 40 40
RAIN L C S C C C
$$
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