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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 AM EDT Thu Jun 18 2026
VAZ046-182000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
531 AM EDT Thu Jun 18 2026
Date Thu 06/18/26 Fri 06/19/26 Sat 06/20/26
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 94 68 86 60 86
TEMP 76 85 90 92 85 77 73 71 71 77 83 85 79 68 63 61 65 78 84 86 80
DEWPT 66 68 68 69 69 69 67 66 68 67 63 59 58 55 55 54 57 56 55 55 58
MAX/MIN RH 46 92 41 79 35
RH 71 57 49 47 59 76 81 84 90 71 51 41 49 63 75 78 75 47 37 35 47
WIND DIR SW SW SW SW SW SW SW SW W W W NW NW NW W W W W W W W
WIND SPD 14 17 17 16 12 9 9 8 5 6 9 12 8 5 4 4 4 6 8 9 5
WIND GUST 26 31 31 27 18
CLOUDS B1 B1 SC B1 B2 OV OV OV B2 B1 SC FW FW FW FW FW CL CL FW FW FW
CLOUDS(%) 58 51 30 58 79 90 94 89 72 51 30 22 12 11 11 10 4 4 13 14 13
VSBY 10 10 9 8 8 8 10 10 8 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 40 80 50 0 0
RAIN SHWRS IS SC SC SC SC O SC IS
TSTMS IS SC IS IS
MIX HGT 2 4 7 6 <1 <1 <1 <1 1 3 6 7 <1 <1 <1 <1 <1 5 7 8 <1
T WIND DIR SW SW W SW SW W SW SW SW SW W NW N NW W W W W W W W
T WIND SPD 17 29 28 28 17 17 16 3 9 18 11 11 8 4 3 3 3 9 13 12 10
DISPERSION FR PR PR PR PR PR VP VP PR
ADI 29117135 92 15 15 14 3 14 59 76 55 5 2 2 2 4 51105103 5
MAX LVORI 3 1 1 1 2 4 4 6 5 1 1 1 2 3 3 4 3 1 1 1 2
STABILITY D C C D D D D D C C B C E F F F A B B B F
CEILING None 4100 3600 7500 None None None None None None
STA PRES 29.08 29.02 29.12 29.14 29.11 29.08 29.19 29.22 29.25 29.20
Date Sun 06/21/26Mon 06/22/26Tue 06/23/26Wed 06/24/26
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 63 91 70 88 65 86 62 86
TEMP 65 68 87 84 73 72 85 80 69 68 83 80 66 67 82 80
DEWPT 57 59 60 64 64 68 72 70 65 63 62 61 57 59 61 63
RH 75 73 40 51 73 87 65 72 87 84 49 52 73 75 49 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW SC B1 B1 B1 B2 B1 SC SC SC FW SC SC SC
POP 12HR 0 5 30 70 50 10 10 20
RAIN SHWRS SC SC SC NM SC IS IS
TSTMS 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