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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Sat May 16 2026
VAZ018-170800-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
401 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 61 89 64 91 65
TEMP 81 73 66 63 61 65 81 87 87 77 70 66 64 69 85 90 89 80 73 68 65 70
DEWPT 59 59 56 54 53 57 60 58 59 60 58 56 55 60 62 59 57 57 56 55 54 59
MIN/MAX RH 76 36 76 33 71
RH 47 62 70 72 75 75 49 38 39 56 66 70 73 73 46 35 34 45 55 63 68 68
WIND DIR W W W W NW W W W S S SW SW SW N S S S S SW SW SW SW
WIND SPD 4 2 2 2 2 2 2 3 2 1 1 1 1 0 2 5 6 4 3 3 2 1
WIND GUST 16 12 12 16 20 17 14 14
CLOUDS B1 B1 SC SC SC SC FW FW FW FW CL CL FW SC CL FW FW FW FW FW SC FW
CLOUDS(%) 67 62 50 49 43 44 12 18 13 12 5 3 12 35 3 17 15 16 17 24 27 23
VSBY 10 10 10 10 8 10 10 10 10 10 9 10 8 10 10 10 10 9
POP 12HR 10 5 0 5 5
MIX HGT 5 <1 <1 <1 <1 <1 4 6 6 <1 <1 <1 <1 <1 4 8 8 <1
T WIND DIR SW SW N NW NW W W SW S S S SW SW W W S S S
T WIND SPD 14 5 11 2 3 2 4 8 10 11 5 5 2 4 3 6 11 12
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 60 3 5 1 2 2 22 62 81 5 3 3 1 4 18 62 92 6
MAX LVORI 1 3 3 3 4 3 2 1 1 3 3 3 3 3 2 1 1 2
STABILITY C F F F F A A A A G G G G A A A B F
CEILING None None None None None None None None None
STA PRES 27.84 27.88 27.94 27.91 27.95 27.99 28.03 27.98
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 93 66 87 65 75 56 69 55 71
TEMP 90 82 70 70 87 78 68 67 74 68 60 59 66 63 59 58 68 65
DEWPT 55 55 52 58 61 62 60 61 62 57 52 52 56 53 52 53 58 56
RH 31 40 53 66 42 58 76 81 66 68 75 78 70 70 78 83 70 73
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC SC FW B1 B2 B1 B1 B2 B2 B2 B2 B2 B2 B2 B2 B2 B2
POP 12HR 5 0 70 40 80 60 70 60 60
RAIN SHWRS SC NM SC SC NM O NM SC NM NM NM NM NM NM
TSTMS IS SC IS IS 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