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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 AM EDT Sun May 31 2026
VAZ012-312000-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 AM EDT Sun May 31 2026
Date Sun 05/31/26 Mon 06/01/26 Tue 06/02/26
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 76 58 76 49 73
TEMP 51 65 73 76 69 62 60 59 61 68 72 75 67 58 53 50 54 64 70 67 62
DEWPT 44 48 52 53 55 56 55 56 58 55 50 48 49 48 47 46 48 48 47 46 47
MAX/MIN RH 45 92 39 86 43
RH 77 54 48 45 61 81 84 90 90 63 46 38 52 69 80 86 80 56 44 47 58
WIND DIR SE SE S SW S SW W W W NW NW N N N N E E E E E NE
WIND SPD 3 4 2 2 3 3 2 1 2 2 3 3 2 1 0 1 1 2 3 2 2
CLOUDS SC B1 B2 B1 B1 B1 B1 B1 B1 SC SC B1 B1 SC SC SC SC SC B1 B1 SC
CLOUDS(%) 28 51 80 55 67 66 59 53 61 50 41 66 67 44 44 49 37 35 66 66 43
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 7 7 7 7 6 6
POP 12HR 0 20 20 20 40
RAIN SHWRS IS IS IS IS IS IS SC SC
TSTMS SC SC
MIX HGT 1 2 4 5 <1 <1 <1 <1 1 3 5 5 <1 <1 <1 <1 2 4 5 3 <1
T WIND DIR SE S S SW S SW SW W W NW NW NW N N NE E E E E E E
T WIND SPD 16 11 6 6 8 5 4 5 8 11 9 10 6 3 3 6 16 17 16 12 11
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 29 30 34 38 4 3 2 3 12 49 57 59 3 2 2 3 32 96 98 52 5
MAX LVORI 3 2 1 1 3 4 5 6 5 1 1 1 2 3 5 5 3 1 1 1 3
STABILITY A C B B F F F F B A A B F F F F A A B B F
CEILING 4100 3500 2700 None None 2900 None None None 3300
STA PRES 27.33 27.25 27.23 27.21 27.22 27.21 27.25 27.28 27.36 27.40
Date Wed 06/03/26Thu 06/04/26Fri 06/05/26Sat 06/06/26
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 44 75 48 78 52 81 56 82
TEMP 48 50 70 67 51 53 76 71 55 57 79 74 59 60 80 75
DEWPT 45 45 40 44 43 44 45 50 48 50 50 54 52 54 54 57
RH 89 83 33 43 74 71 33 47 77 77 36 50 78 81 41 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW FW CL CL FW FW CL FW SC SC SC SC SC
POP 12HR 5 10 5 0 0 5 0 20
RAIN SHWRS IS
TSTMS 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