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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 AM EDT Fri Apr 10 2026
VAZ046-102000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
802 AM EDT Fri Apr 10 2026
Date Fri 04/10/26 Sat 04/11/26 Sun 04/12/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 77 52 78 52 78
TEMP 63 74 77 69 61 58 54 56 71 76 77 70 61 56 52 54 65 75 78 73
DEWPT 35 36 37 39 41 40 42 44 52 53 51 50 48 46 46 46 47 50 51 50
MAX/MIN RH 23 68 39 78 39
RH 35 25 24 33 48 51 64 64 51 45 40 49 62 69 80 74 52 41 39 44
WIND DIR SW SW SW S SW SW W NW N NE E E NE E E E S S S S
WIND SPD 5 5 6 5 5 5 4 3 5 5 5 5 4 3 3 2 5 8 9 5
WIND GUST 16 16
CLOUDS CL CL CL FW CL FW FW B1 FW SC FW SC SC SC SC SC FW FW SC SC
CLOUDS(%) 0 0 0 7 5 7 24 57 19 26 19 27 27 40 39 37 24 24 26 28
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 5 5 0
MIX HGT 2 4 5 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 1 3 4 6 <1
T WIND DIR SW SW SW S SW SW W NW N NW NW E E SE SE SE S S S S
T WIND SPD 9 6 11 5 5 4 3 2 9 3 4 9 11 11 11 8 12 10 14 5
DISPERSION PR PR PR VP PR VP VP VP PR
ADI 21 33 69 3 3 2 2 2 42 24 31 4 5 5 5 11 54 54 93 3
MAX LVORI 2 1 1 2 2 2 3 3 1 2 1 2 3 3 4 3 1 1 1 2
STABILITY A A B F F F F B A A A F F G G A A B B F
CEILING None None None None None None None None None None
STA PRES 29.61 29.51 29.50 29.50 29.57 29.54 29.61 29.65 29.68 29.55
Date Mon 04/13/26Tue 04/14/26Wed 04/15/26Thu 04/16/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 61 82 60 89 64 91 66 90
TEMP 65 63 79 77 66 62 86 81 69 66 90 85 72 68 88 82
DEWPT 51 53 52 49 49 51 55 54 55 55 57 52 52 54 54 52
RH 60 70 39 37 54 67 35 39 61 68 33 32 49 61 31 35
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 B1 B1 FW FW SC SC SC SC SC SC SC B1 SC B1
POP 12HR 0 5 0 10 0 5 5 10
$$
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