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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Tue May 5 2026
NCZ003-060800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
131 AM EDT Tue May 5 2026
Date 05/04/26 Tue 05/05/26 Wed 05/06/26 Thu
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 50 78 58 76 61
TEMP 57 52 56 67 73 77 71 66 62 60 60 66 72 75 73 67 64 63 61
DEWPT 43 42 43 45 43 44 45 48 50 52 55 58 60 61 62 62 63 62 61
MIN/MAX RH 72 32 83 61 100
RH 59 69 62 45 34 31 39 52 65 75 84 75 66 62 68 84 97 97100
WIND DIR SW SW SW SW S S S S S S S SW SW SW SW W SW SW SW
WIND SPD 4 3 3 8 12 14 8 8 9 8 9 10 11 10 9 8 6 6 6
WIND GUST 24 26 18 19 23 24 21
CLOUDS FW FW FW CL SC SC SC SC B1 B2 OV B2 B2 B2 OV OV OV OV OV
CLOUDS(%) 12 9 6 1 26 38 40 40 61 79 97 86 83 83 90 90 96 96 92
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 20 50 90
RAIN SHWRS IS SC SC SC SC O O O O O
TSTMS IS SC SC IS SC IS IS
MIX HGT <1 <1 <1 3 6 7 <1 <1 1 1 2 2 5 4 <1
T WIND DIR SW SW SW SW SW S S S S S S SW SW SW SW
T WIND SPD 5 4 4 19 21 23 9 12 14 13 11 14 23 18 6
DISPERSION VP VP PR PR PR PR PR PR PR PR
ADI 4 2 4 80100109 8 11 13 12 19 39 68 65 6
MAX LVORI 3 3 3 1 1 1 2 2 3 4 4 3 1 1 3
STABILITY E F A B C C D D D D D C D C D
CEILING None None None None 2000 400 2700 2700
STA PRES 28.94 28.95 28.87 28.87 28.84 28.84 28.81
Date 05/07Fri 05/08/26Sat 05/09/26Sun 05/10/26Mon 05/11/26
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 70 45 66 47 74 48 78 59 76
TEMP 67 63 52 46 63 61 50 50 71 68 52 53 76 73 61 61 72 67
DEWPT 60 52 44 40 41 46 45 48 51 49 47 48 51 54 56 57 60 54
RH 78 67 74 79 44 58 83 93 49 51 83 83 42 51 84 87 66 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B1 B1 SC SC SC SC SC SC CL FW FW SC B1 B1 B1 B2
POP 12HR 80 30 20 20 20 5 10 40 70
RAIN SHWRS O NM SC IS IS IS IS IS IS SC SC SC 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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