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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Tue May 26 2026
NCZ001-270800-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
501 PM EDT Tue May 26 2026
Date 05/26/26 Wed 05/27/26 Thu 05/28/26 Fri
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 62 70 60 68 54
TEMP 64 64 65 65 63 63 68 68 64 62 62 63 63 63 68 68 64 60 57 55 58
DEWPT 62 61 61 60 60 61 62 62 59 58 58 57 58 58 59 57 56 54 52 51 51
MIN/MAX RH 95 76 92 69 84
RH 93 90 87 84 90 93 81 81 84 87 87 81 84 84 73 68 75 81 83 86 77
WIND DIR SW SW SW W W W W W W W W W NW NW NW N N N N NE E
WIND SPD 8 9 9 8 8 6 6 6 9 12 16 18 18 13 9 8 8 8 6 6 6
CLOUDS B2 B2 B2 B2 B2 B1 B2 B2 B1 SC B1 B1 B1 B1 B1 B1 SC SC SC SC SC
CLOUDS(%) 75 81 80 82 78 56 75 72 63 50 62 62 67 67 57 57 47 44 43 44 49
VSBY 7 6 7 6 7 8 5 10 10 10 4 2 6 6 6 6 6
POP 12HR 60 70 40 50 5
RAIN SHWRS NM SC IS NM NM SC SC SC SC SC SC SC SC
TSTMS SC IS SC SC IS IS SC IS
MIX HGT 1 <1 <1 <1 <1 2 3 3 1 <1 <1 1 1 3 3 4 1
T WIND DIR SW W SW W W W W W W W NW NW NW N N N N
T WIND SPD 13 5 2 2 3 21 21 20 14 13 18 12 13 9 12 14 14
DISPERSION PR PR PR PR PR FR GD GD PR PR PR PR
ADI 12 5 2 2 4 55 73 69 13 12 16 11 22 20 43 55 13
MAX LVORI 5 6 6 5 6 4 3 3 4 5 4 4 4 4 3 3 4
STABILITY D D D D C C C C D D D D D D C C D
CEILING 3700 2600 1200 1000 500 400 500 None None
STA PRES 26.77 26.77 26.78 26.72 26.71 26.70 26.73 26.71
Date 05/29Sat 05/30/26Sun 05/31/26Mon 06/01/26Tue 06/02/26
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 68 57 72 53 70 52 70 50 67
TEMP 66 63 59 59 66 63 56 55 63 60 54 55 64 61 53 52 61 57
DEWPT 53 55 53 53 55 54 51 50 51 52 49 50 50 50 47 46 47 48
RH 63 75 80 80 68 72 83 83 65 75 83 83 60 67 80 80 60 72
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B2 B1 B1 SC SC SC B1 SC SC B1 B1 SC SC SC SC
POP 12HR 10 20 30 20 30 20 30 20 30
RAIN SHWRS IS SC SC IS IS SC IS SC SC IS IS SC IS
TSTMS SC IS 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
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