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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
531 AM EDT Sat May 9 2026
VAZ018-092000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
531 AM EDT Sat May 9 2026
Date Sat 05/09/26 Sun 05/10/26 Mon 05/11/26
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 75 52 80 56 66
TEMP 56 67 72 73 65 58 54 53 57 73 79 78 68 63 59 57 56 59 64 62 55
DEWPT 44 48 46 46 47 46 47 46 50 51 49 49 51 52 51 50 51 50 46 42 38
MAX/MIN RH 37 79 35 83 47
RH 64 50 39 38 52 64 77 77 77 46 35 36 54 67 75 77 83 72 52 48 53
WIND DIR SW SW W W W W W W W W W W W NW NW NW N N N NW NW
WIND SPD 4 5 6 6 3 2 3 3 2 5 5 5 2 2 1 2 3 3 4 6 4
WIND GUST 17 19 20 21 14 13 12 17 16 17 13 14 13 14 17 20
CLOUDS B2 B1 B1 SC FW FW FW FW CL FW FW FW SC SC B2 B2 B2 B2 B1 SC FW
CLOUDS(%) 70 65 59 34 11 13 6 10 5 8 20 14 31 43 75 84 84 84 62 38 25
VSBY 10 10 7 10 10 10 10 10 10 10 10 10 10 10 6 6 6 6 7 7
POP 12HR 20 0 5 60 80
RAIN SHWRS IS NM NM O O IS IS
TSTMS IS
MIX HGT <1 5 6 5 <1 <1 <1 <1 <1 5 8 7 <1 <1 <1 <1 <1 2 2 4 1
T WIND DIR SW SW SW W W W W W W W W W NW NW W E NE NE N N N
T WIND SPD 6 19 21 24 13 5 5 5 5 23 17 13 1 1 2 13 20 23 10 10 10
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 5 82 96146 6 3 3 3 6150156112 1 1 1 6 24 59 29 51 5
MAX LVORI 3 1 1 1 2 3 4 4 4 1 1 1 2 4 3 4 3 3 2 1 2
STABILITY C C C B G G G G A A A A G F F F B B C B F
CEILING 2900 None None None None None None 4900 1400 None
STA PRES 27.61 27.59 27.68 27.72 27.77 27.73 27.72 27.68 27.75 27.76
Date Tue 05/12/26Wed 05/13/26Thu 05/14/26Fri 05/15/26
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 41 69 49 71 51 68 49 73
TEMP 44 45 66 60 49 51 67 63 54 53 66 61 51 51 70 66
DEWPT 34 35 35 37 35 40 49 49 46 46 45 44 42 44 47 47
RH 68 68 32 42 58 66 52 60 74 77 47 53 71 77 44 50
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL FW FW SC B1 B2 B1 SC SC SC FW SC SC SC
POP 12HR 5 0 20 70 40 20 10 10
RAIN SHWRS IS SC NM SC IS
TSTMS 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