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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Sun Jun 21 2026
VAZ024-212000-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 AM EDT Sun Jun 21 2026
Date Sun 06/21/26 Mon 06/22/26 Tue 06/23/26
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 88 63 90 65 88
TEMP 77 83 86 79 72 68 66 69 80 85 88 81 74 70 68 71 79 85 87 80
DEWPT 59 57 57 59 59 57 58 60 65 69 71 70 69 68 65 66 65 63 60 60
MAX/MIN RH 36 84 55 97 40
RH 54 41 37 50 64 68 75 73 60 59 57 69 84 93 90 84 62 48 40 51
WIND DIR W W W NW N NE E S S SW SW SW W W W NW NW NW NW NW
WIND SPD 4 5 5 1 2 2 1 1 6 11 9 5 2 1 1 3 4 4 5 5
WIND GUST 18 20
CLOUDS FW SC SC FW SC B1 SC SC SC B1 B2 OV B2 B1 SC B1 B1 B1 B1 SC
CLOUDS(%) 15 28 28 19 36 56 33 47 50 63 82 89 82 60 49 53 53 55 55 31
VSBY 10 10 10 10 10 10 10 10 8 6 6 6 10 10 10 10 10 10 10 10
POP 12HR 0 0 90 80 30
RAIN SHWRS SC NM O NM SC SC SC SC
TSTMS SC SC IS IS IS
MIX HGT 5 7 7 <1 <1 <1 <1 <1 4 5 3 <1 <1 <1 <1 2 4 5 5 1
T WIND DIR W W W NW NE NE NE SE SW SW SW SW SW SW W NW NW NW NW N
T WIND SPD 10 12 11 1 2 3 3 2 20 19 17 8 2 1 10 11 11 10 9 10
DISPERSION VP VP VP VP PR VP VP VP PR
ADI 64110 91 1 1 2 2 2 92 58 51 5 1 1 5 24 44 44 38 5
MAX LVORI 1 1 1 2 3 3 4 3 1 1 1 3 5 7 6 4 1 1 1 2
STABILITY A A A G G F G A B D C E F F F B C C C F
CEILING None None None None None 4100 4100 None None None
STA PRES 28.47 28.44 28.48 28.47 28.44 28.40 28.37 28.36 28.46 28.47
Date Wed 06/24/26Thu 06/25/26Fri 06/26/26Sat 06/27/26
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 59 88 62 89 63 91 64 91
TEMP 62 64 85 81 66 67 86 80 67 68 88 82 68 68 89 83
DEWPT 57 57 56 60 58 60 64 67 64 65 65 66 63 63 63 65
RH 84 78 37 49 75 78 48 65 90 90 47 58 84 84 42 55
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW SC SC B1 B1 B1 SC B1 SC SC SC B1
POP 12HR 5 0 5 50 30 30 20 30
RAIN SHWRS IS SC SC IS IS SC IS IS SC
TSTMS IS SC IS SC SC
$$
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