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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
230 AM EDT Sun May 10 2026
NCZ005-110800-
RAWS 310540
36.38N 79.70W Elev. 858 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 53 83 55 68 45
TEMP 54 57 75 81 81 73 65 61 58 59 63 63 64 60 52 48 46 49
DEWPT 52 53 54 49 48 52 52 52 53 53 54 54 53 52 50 47 45 45
MIN/MAX RH 95 31 89 66 98
RH 93 86 48 33 32 48 63 72 83 80 72 72 67 75 93 96 96 86
WIND DIR W W NW W W SW W N NE NE NE NE NE NE N N N NE
WIND SPD 2 2 2 3 5 2 1 1 3 8 9 9 6 2 1 2 3 3
CLOUDS SC FW CL CL CL FW SC FW SC B2 OV OV OV OV SC SC SC FW
CLOUDS(%) 46 12 2 4 3 20 49 18 41 73 92 93 88 96 42 31 27 22
VSBY 9 10 10 10 10 10 10 10 10 10 8 9 10 10 10 10 10 10
POP 12HR 5 0 5 50 5
RAIN SHWRS SC SC SC SC
MIX HGT <1 <1 5 8 9 <1 <1 <1 <1 2 2 2 2 <1 <1 <1 <1 1
T WIND DIR W NW N W W SW SW W NE NE NE NE NE NE N N N N
T WIND SPD 3 3 8 6 8 3 3 2 4 17 17 18 14 20 12 10 4 12
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 2 3 51 64 80 2 2 1 2 35 44 47 32 9 6 5 2 19
MAX LVORI 7 6 1 1 1 2 3 3 5 3 3 3 3 4 6 7 9 4
STABILITY F A A A A G F G F C C C C F F G G A
CEILING None None None None None 6700 2800 None None
STA PRES 29.20 29.27 29.24 29.27 29.28 29.34 29.35 29.38 29.41
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 51 76 51 73 47 77 54 85
TEMP 69 66 53 55 75 69 57 54 71 66 52 52 74 70 58 59 83 79
DEWPT 43 43 44 48 52 55 53 51 45 44 43 44 46 48 48 51 53 55
RH 39 43 71 77 45 61 86 90 39 45 71 74 37 45 69 75 36 44
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW SC B1 B2 SC CL FW FW CL FW FW FW FW FW FW
POP 12HR 0 0 40 60 5 0 0 5 0
RAIN SHWRS SC NM IS
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