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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1031 AM EDT Thu May 14 2026
NCZ001-142000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
1031 AM EDT Thu May 14 2026
Date Thu 05/14/26 Fri 05/15/26 Sat 05/16/26
UTC 3hrly 09 12 15 18 21 00 03 06 09 12 15 18 21 00 03 06 09 12 15 18 21 00
EDT 3hrly 05 08 11 14 17 20 23 02 05 08 11 14 17 20 23 02 05 08 11 14 17 20
MAX/MIN TEMP 52 40 66 50 74
TEMP 42 49 51 48 44 41 40 43 53 62 64 57 51 50 51 57 65 70 72 67
DEWPT 34 34 34 33 35 35 35 35 33 33 34 37 37 36 37 41 45 49 51 51
MAX/MIN RH 51 83 31 58 46
RH 73 56 52 56 70 79 82 73 46 33 32 47 59 58 59 55 48 47 48 56
WIND DIR NW NW NW NW NW NW NW NW NW W W W W W W SW SW SW SW S
WIND SPD 23 19 20 23 16 14 13 13 9 5 5 5 6 6 6 5 6 6 6 6
CLOUDS SC FW CL FW FW FW FW FW CL FW SC FW FW SC SC SC SC SC SC SC
CLOUDS(%) 50 20 5 7 12 18 9 13 3 16 47 9 19 29 35 31 34 35 46 36
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 20
RAIN SHWRS IS IS
TSTMS IS IS
MIX HGT 3 4 4 2 <1 <1 <1 1 3 4 3 <1 <1 <1 <1 <1 4 6 5 <1
T WIND DIR NW NW NW NW NW NW NW NW NW NW W W W W W W W W W S
T WIND SPD 27 27 26 24 23 23 14 19 10 10 8 2 2 3 4 3 9 13 13 10
DISPERSION GD GD GD FR PR PR PR PR PR
ADI 81 98 97 32 21 21 13 31 35 52 36 1 1 2 2 3 48 98 78 5
MAX LVORI 3 1 1 1 3 3 4 3 1 1 1 2 3 3 3 3 1 1 1 3
STABILITY C C C D D D D C B A A F F F F A B B B F
CEILING None None None None None None None None None
STA PRES 26.61 26.65 26.68 26.73 26.70 26.76 26.78 26.81 26.79
Date Sun 05/17/26Mon 05/18/26Tue 05/19/26Wed 05/20/26
UTC 6hrly 06 12 18 00 06 12 18 00 06 12 18 00 06 12 18 00
EDT 6hrly 02 08 14 20 02 08 14 20 02 08 14 20 02 08 14 20
MIN/MAX TEMP 57 78 59 79 60 78 60 76
TEMP 59 60 72 69 60 63 75 70 62 63 73 70 63 64 71 69
DEWPT 49 50 51 55 53 54 52 54 54 55 54 56 55 56 56 57
RH 69 69 48 61 78 72 45 57 75 75 51 61 75 75 59 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC FW SC FW FW FW FW FW B1 SC SC B2 B2
POP 12HR 5 20 10 10 10 30 10 60
RAIN SHWRS IS SC NM NM
TSTMS IS SC 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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