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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
230 AM EDT Sun May 10 2026
NCZ003-110800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
230 AM EDT Sun May 10 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 52 81 55 68 45
TEMP 52 56 73 78 80 74 64 59 56 59 62 63 64 60 53 48 45 48
DEWPT 50 51 51 48 49 52 52 52 52 53 55 55 55 52 49 44 40 41
MIN/MAX RH 92 33 86 70 86
RH 93 83 46 35 34 46 65 78 86 80 78 75 73 75 86 86 82 77
WIND DIR NW NW NW SW SW SW W N NE NE NE NE NE NE N N N N
WIND SPD 4 3 3 4 4 3 3 4 4 6 6 6 5 4 4 5 5 4
CLOUDS SC FW CL FW FW FW SC SC SC B2 OV OV OV OV SC FW FW FW
CLOUDS(%) 45 11 1 9 9 23 39 36 44 84 89 91 94 92 32 25 19 16
VSBY 10 10 10 10 10 10 10 10 10 10 6 10 10 10 10 10 10 10
POP 12HR 0 0 5 60 5
RAIN SHWRS SC SC SC
MIX HGT <1 <1 5 8 9 <1 <1 <1 <1 1 2 2 2 <1 <1 <1 <1 <1
T WIND DIR NW NW NW W W SW SW W NE NE NE NE NE NE NE N N N
T WIND SPD 3 2 8 6 8 4 2 2 3 16 17 17 14 16 10 5 4 10
DISPERSION VP VP VP VP VP VP VP PR PR
ADI 2 2 50 64 80 2 1 1 2 30 45 42 41 11 5 3 2 10
MAX LVORI 6 5 1 1 1 2 3 4 6 3 3 3 3 4 5 5 5 4
STABILITY E A A A A G G F E B C C C E F F F A
CEILING None None None None None 6300 3000 None None
STA PRES 28.89 28.96 28.92 28.95 28.95 29.01 29.01 29.05 29.09
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 72 50 74 50 71 47 76 53 84
TEMP 68 66 52 53 73 67 55 52 69 64 50 51 72 70 56 57 81 77
DEWPT 42 44 44 46 52 55 51 47 43 43 42 42 45 48 48 49 52 55
RH 39 45 74 77 48 65 86 83 39 46 74 71 38 45 74 75 37 47
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL FW FW SC B1 B1 FW CL FW CL CL FW FW SC FW SC FW
POP 12HR 0 0 50 40 0 0 0 0 5
RAIN SHWRS SC SC
TSTMS 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