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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Jun 18 2026
VAZ046-190800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Thu Jun 18 2026
Date 06/18/26 Fri 06/19/26 Sat 06/20/26 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 68 85 60 85 62
TEMP 73 72 70 70 75 81 84 79 68 63 60 65 77 83 85 80 69 65 62 67
DEWPT 70 69 68 69 70 66 60 58 55 54 54 57 56 55 55 57 56 56 56 59
MIN/MAX RH 98 45 79 35 80
RH 90 90 93 97 84 60 44 49 63 72 81 75 48 38 36 45 63 73 81 75
WIND DIR W SW SW SW NW N NW NW NW W W W W W W W NW W W W
WIND SPD 8 5 6 5 5 8 11 9 5 4 4 4 6 9 9 5 4 3 3 2
WIND GUST 19
CLOUDS OV OV OV OV OV FW FW FW CL SC FW SC FW FW FW FW FW FW FW FW
CLOUDS(%) 98 95100 97 88 19 14 8 3 37 21 27 12 20 14 13 7 7 16 7
VSBY 8 8 7 7 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 90 70 0 0 0
RAIN SHWRS SC NM O NM SC
TSTMS IS IS IS IS SC
MIX HGT <1 <1 <1 1 2 5 6 <1 <1 <1 <1 <1 5 7 8 <1
T WIND DIR W W S SW NW NW NW NW NW W W W W W W SW
T WIND SPD 23 9 9 11 10 14 18 12 5 4 3 3 8 9 11 2
DISPERSION PR PR PR PR PR VP VP PR VP VP VP
ADI 21 6 8 18 28 79 84 8 3 2 2 4 45 70 97 1
MAX LVORI 4 5 5 5 4 1 1 2 3 3 4 3 1 1 1 2
STABILITY D E D C C B C E F F F A B B B F
CEILING 10700 3100 600 None None None None None None
STA PRES 29.09 29.09 29.07 29.10 29.23 29.28 29.29 29.23
Date 06/21Mon 06/22/26Tue 06/23/26Wed 06/24/26Thu 06/25/26
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 89 67 89 66 86 62 86 63 86
TEMP 87 85 71 71 85 80 70 69 84 80 66 66 84 81 66 67 83 81
DEWPT 59 63 61 64 70 71 67 65 64 63 59 59 60 62 61 62 62 64
RH 39 48 71 79 61 74 90 87 51 56 78 78 44 53 84 84 49 56
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW SC B1 B1 B2 B1 B1 SC SC SC SC SC SC SC SC SC SC
POP 12HR 0 20 80 40 20 10 20 20 20
RAIN SHWRS IS SC O SC IS IS IS IS IS IS IS
TSTMS SC SC IS 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
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