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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
731 PM EDT Sat May 16 2026
VAZ012-170800-
RAWS 447502
37.01N 81.18W Elev. 2540 ft
731 PM EDT Sat May 16 2026
Date 05/16/26 Sun 05/17/26 Mon 05/18/26 Tue
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 56 87 58 89 59
TEMP 71 62 59 57 61 76 82 84 76 66 62 59 63 79 84 87 80 68 63 60 63
DEWPT 55 53 52 51 53 54 53 53 56 55 54 53 57 57 54 53 53 53 53 52 55
MIN/MAX RH 81 32 85 31 79
RH 57 72 78 80 75 46 37 34 50 68 75 80 81 47 36 31 39 59 70 75 75
WIND DIR W W NW NW W W SW SW S S S SW N S S S S S S S N
WIND SPD 2 1 1 1 1 2 2 2 1 1 1 1 0 2 4 4 3 2 1 1 0
CLOUDS B1 B1 SC SC FW FW FW FW FW CL FW SC SC CL FW FW FW SC SC SC FW
CLOUDS(%) 64 58 39 34 23 8 22 7 11 5 7 34 33 4 11 15 18 28 27 39 17
VSBY 10 10 10 8 10 10 10 10 10 10 10 9 10 10 10 10 10 10 10 10 10
POP 12HR 5 5 0 5 5
MIX HGT <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 4 8 8 <1
T WIND DIR SW SW SW W W W SW S S S S SW SW W S S S
T WIND SPD 6 3 3 3 2 8 8 8 5 6 3 3 2 4 6 10 10
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 3 2 2 2 2 37 59 62 3 3 2 2 2 26 63 92 5
MAX LVORI 3 3 4 4 4 1 1 1 2 3 4 5 5 2 1 1 2
STABILITY F F G G A A A A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 27.32 27.36 27.41 27.38 27.42 27.46 27.51 27.46
Date 05/19Wed 05/20/26Thu 05/21/26Fri 05/22/26Sat 05/23/26
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 90 61 82 58 73 53 68 52 70
TEMP 85 79 64 64 80 75 63 61 71 67 57 55 66 64 57 55 68 66
DEWPT 51 53 52 55 58 60 59 59 60 57 53 52 55 54 53 53 57 56
RH 31 41 65 73 47 60 87 93 68 70 86 90 68 70 86 93 68 70
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC SC B1 B2 B1 B1 B2 B2 B2 B1 B2 B2 B2 B2 B2 B2
POP 12HR 5 5 70 50 80 60 80 60 60
RAIN SHWRS SC NM SC IS NM O NM SC NM O NM SC NM NM
TSTMS IS SC IS 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