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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Sat May 9 2026
VAZ046-100800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
801 PM EDT Sat May 9 2026
Date 05/09/26 Sun 05/10/26 Mon 05/11/26 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 53 83 53 65 44
TEMP 61 56 53 58 76 82 83 75 66 62 57 54 58 60 63 58 52 49 47 50
DEWPT 51 49 48 50 52 49 50 52 54 57 54 50 54 50 49 47 45 42 40 39
MIN/MAX RH 83 31 88 59 81
RH 70 77 83 75 43 32 32 45 65 84 90 86 86 69 60 67 77 77 76 66
WIND DIR W W W W W W W SW N N NE NE N N N NE N N N N
WIND SPD 3 3 3 3 5 6 6 3 5 6 8 10 10 9 6 4 4 5 5 6
CLOUDS FW FW FW CL FW FW FW SC B1 B1 B1 OV OV OV B2 B1 SC SC FW FW
CLOUDS(%) 7 20 24 4 7 9 21 48 65 63 66 98 96 92 71 69 38 30 17 6
VSBY 10 10 10 10 10 10 10 10 10 8 9 7 4 4 6 10
POP 12HR 0 0 50 80 5
RAIN SHWRS SC O O SC SC
MIX HGT <1 <1 <1 <1 4 8 7 <1 <1 <1 <1 1 2 2 2 <1
T WIND DIR SW W W W NW W W SW NW NE NE NE N NE E NE
T WIND SPD 2 3 3 3 9 10 14 4 3 14 13 16 13 10 5 4
DISPERSION VP VP VP VP PR PR PR VP VP PR PR
ADI 1 2 2 3 51 85116 2 2 10 12 28 29 25 16 3
MAX LVORI 3 3 5 4 1 1 1 2 3 4 4 4 4 3 2 3
STABILITY F E F A A B B F E E D C C C C E
CEILING None None None None 6200 1300 3400 400 None
STA PRES 29.16 29.21 29.27 29.23 29.30 29.38 29.45 29.42
Date 05/12Wed 05/13/26Thu 05/14/26Fri 05/15/26Sat 05/16/26
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 70 48 74 51 72 48 75 52 83
TEMP 67 62 50 52 71 67 56 54 70 66 52 52 72 69 56 57 80 76
DEWPT 35 38 38 42 50 53 53 51 47 45 44 45 47 48 48 50 52 52
RH 30 41 63 69 47 61 90 90 44 47 74 77 41 47 74 77 38 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS CL CL FW FW B1 B1 B2 SC FW FW FW FW FW FW SC SC FW FW
POP 12HR 0 0 50 60 10 5 5 5 5
RAIN SHWRS SC NM
TSTMS 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