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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
301 PM EDT Thu Apr 16 2026
VAZ024-170800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
301 PM EDT Thu Apr 16 2026
Date 04/16/26 Fri 04/17/26 Sat 04/18/26 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
EDT 3hrly 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08
MIN/MAX TEMP 62 86 57 90 56
TEMP 89 80 73 68 64 64 76 84 86 78 68 62 58 60 78 87 89 80 73 68 62 56
DEWPT 46 48 51 56 56 57 55 49 47 47 49 49 50 52 55 54 53 54 56 55 55 48
MIN/MAX RH 82 26 79 29 79
RH 23 33 46 65 75 78 48 30 26 33 51 62 75 75 45 32 29 41 55 63 78 74
WIND DIR SW W W W W W NW NW NW NW NW N N N S S S S SW W W NW
WIND SPD 11 3 3 2 2 2 4 5 5 2 1 1 1 0 2 5 5 3 2 2 4 6
WIND GUST 14 19
CLOUDS FW FW B1 B1 B1 SC FW FW FW FW FW SC FW SC SC SC SC B1 B2 B2 B2 B2
CLOUDS(%) 10 18 56 68 53 31 14 8 6 14 9 31 25 29 26 39 50 69 70 74 70 83
VSBY 10 10 9 9 9 9 9 10 10 10 10 10 10 10 10 7 7 6 6 6 6
POP 12HR 30 10 0 10 50
RAIN SHWRS SC IS SC SC SC SC SC SC
TSTMS IS
MIX HGT 8 <1 1 <1 <1 <1 5 8 8 <1 <1 <1 <1 <1 4 7 8 <1
T WIND DIR SW SW W W W W NW NW NW W NW N N N SW SW SW S
T WIND SPD 19 9 19 11 4 5 17 14 13 2 3 3 3 1 12 13 17 10
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 99 4 9 5 2 7111135130 1 2 2 2 1 64116163 5
MAX LVORI 1 2 2 3 4 4 1 1 1 2 2 3 3 4 1 1 1 2
STABILITY C G F F F A A A A G G G G A A A A F
CEILING None None None None None None None None 5700
STA PRES 28.43 28.46 28.49 28.46 28.48 28.47 28.45 28.35
Date 04/19Mon 04/20/26Tue 04/21/26Wed 04/22/26Thu 04/23/26
UTC 6hrly 18 00 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 14 20 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MAX/MIN TEMP 66 38 62 34 74 50 81 52 81
TEMP 61 57 46 41 59 55 39 38 68 67 54 54 79 72 57 55 78 72
DEWPT 36 26 25 22 17 16 20 20 29 33 36 41 43 43 44 46 47 42
RH 39 30 43 46 19 21 46 48 23 28 50 61 28 35 62 72 33 34
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B1 FW CL CL CL CL CL CL FW FW FW SC SC FW FW SC SC
POP 12HR 50 10 0 0 0 0 10 5 20
RAIN SHWRS SC SC IS 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