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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
601 PM EDT Wed May 13 2026
NCZ003-140800-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
601 PM EDT Wed May 13 2026
Date 05/13/26 Thu 05/14/26 Fri 05/15/26 Sat
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 46 65 43 77 51
TEMP 70 59 53 49 48 56 62 65 61 51 46 44 48 65 73 77 70 58 54 52 57
DEWPT 55 53 49 45 40 39 41 40 40 40 39 38 39 41 42 43 47 45 43 41 45
MIN/MAX RH 87 41 80 30 67
RH 59 80 86 86 74 53 46 40 46 66 76 79 71 41 33 30 44 62 66 66 64
WIND DIR W NW NW NW NW NW NW NW NW NW NW NW NW NW W SW N N N N N
WIND SPD 2 2 3 5 11 12 11 9 5 2 2 2 4 2 2 3 0 0 0 0 0
WIND GUST 14 13 19 21 24 23 21 19 13 16
CLOUDS B1 SC SC FW CL CL CL FW FW FW CL FW FW FW FW FW SC FW SC SC SC
CLOUDS(%) 67 43 30 18 4 5 4 9 7 6 4 11 19 15 9 20 34 22 26 37 46
VSBY 7 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 20 0 0 0 0
RAIN SHWRS IS
TSTMS
MIX HGT <1 <1 <1 <1 2 3 5 5 <1 <1 <1 <1 2 4 6 6 <1
T WIND DIR SW NW NW NW NW NW NW NW NW NW NW NW NW NW W SW S
T WIND SPD 9 9 9 11 19 21 23 21 12 6 6 8 16 12 6 8 4
DISPERSION VP VP VP PR PR VP VP VP VP VP VP VP
ADI 4 4 4 5 53 76 94134 6 3 3 4 36 66 50 60 2
MAX LVORI 3 4 5 5 3 1 1 1 2 3 4 5 3 1 1 1 2
STABILITY F F G F C C C B F G G G A A A A G
CEILING None None None None None None None None None
STA PRES 27.95 27.95 28.02 28.03 28.09 28.12 28.15 28.12
Date 05/16Sun 05/17/26Mon 05/18/26Tue 05/19/26Wed 05/20/26
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 85 56 85 59 86 59 86 60 85
TEMP 81 78 61 61 83 79 63 64 85 80 64 64 83 80 65 65 83 78
DEWPT 55 58 54 54 58 61 57 57 60 62 58 59 61 62 59 60 63 64
RH 41 50 78 78 43 54 81 78 43 54 81 84 47 54 81 84 51 62
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC SC SC FW FW FW FW FW SC SC SC SC SC B2
POP 12HR 5 5 5 10 10 5 10 20 60
RAIN SHWRS IS SC NM
TSTMS IS 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
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