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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
431 PM EDT Sat May 9 2026
NCZ003-100800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
431 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 54 81 57 69 45
TEMP 75 71 60 55 54 56 73 79 80 73 65 60 58 60 63 64 65 61 54 50 48 51
DEWPT 51 52 51 49 48 49 50 47 49 52 54 53 54 55 59 52 50 48 44 41 38 38
MIN/MAX RH 82 31 86 57 73
RH 43 51 72 80 80 77 44 32 34 48 68 78 86 84 87 65 58 62 69 71 68 61
WIND DIR SW W NW NW NW NW W SW SW SW SW NW N N N N N N N N N N
WIND SPD 9 5 5 4 4 3 3 5 5 5 4 4 6 8 8 8 8 8 9 8 6 6
CLOUDS SC FW B1 B2 B1 SC CL CL FW FW SC SC B1 OV OV OV B2 B1 FW FW FW FW
CLOUDS(%) 31 23 62 70 66 37 1 5 15 17 28 33 63100 92 90 81 53 21 22 18 13
VSBY 10 10 8 8 7 7 10 10 10 10 10 7 7 6 6 6 6 10
POP 12HR 0 0 40 60 0
RAIN SHWRS NM NM SC SC
MIX HGT 6 <1 <1 <1 <1 <1 4 8 9 <1 <1 <1 <1 <1 3 2 3 <1
T WIND DIR SW W W NW NW W NW W W SW W NW N NE NE NE NE NE
T WIND SPD 13 3 1 2 2 1 4 6 11 5 2 2 4 13 12 18 12 8
DISPERSION PR PR VP VP PR VP VP PR PR PR PR PR
ADI 98 2 1 2 2 1 24 65119 3 1 1 3 16 39 47 42 7
MAX LVORI 1 2 4 5 5 4 2 1 1 2 3 4 6 4 4 1 1 3
STABILITY B F E E E A A A A F F F E D C C C D
CEILING 19700 29500 None None None 7000 2900 500 None
STA PRES 28.84 28.88 28.96 28.92 28.96 28.98 29.04 29.02
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 71 48 74 50 72 47 76 52 83
TEMP 67 63 50 52 70 67 55 53 69 65 51 51 72 69 56 56 79 76
DEWPT 37 40 41 43 51 54 50 48 44 43 43 43 45 48 48 48 51 53
RH 33 43 71 71 51 63 83 83 40 45 74 74 38 47 74 74 38 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL FW SC B1 B1 FW FW FW CL CL FW FW FW FW FW FW
POP 12HR 0 0 50 40 0 0 5 5 5
RAIN SHWRS IS SC SC
TSTMS SC 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