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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Wed May 6 2026
NCZ001-062000-
RAWS 310142
36.40N 81.46W Elev. 4608 ft
801 AM EDT Wed May 6 2026
Date Wed 05/06/26 Thu 05/07/26 Fri 05/08/26
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 64 51 55 39 58
TEMP 57 62 62 59 59 58 57 53 51 52 50 47 46 42 40 42 48 56 57 53
DEWPT 53 57 58 56 56 54 53 52 51 50 46 43 40 38 36 35 33 35 37 40
MAX/MIN RH 67 100 79 90 44
RH 86 84 87 90 90 86 86 96100 93 86 86 79 86 85 76 56 45 47 61
WIND DIR SW W W W W W W W W W NW NW NW NW NW NW W SW SW S
WIND SPD 18 17 14 12 11 9 6 9 9 10 16 17 16 13 11 6 5 6 9 9
WIND GUST 28 27
CLOUDS OV B2 B2 OV OV OV OV B2 B2 B2 SC SC SC SC SC FW FW FW FW FW
CLOUDS(%) 100 85 85 96 93 97 95 83 78 72 47 39 33 40 32 15 7 12 18 22
VSBY 8 7 7 4 5 4 3 4 6 6 6 7 7 10 10 10 10 10 10 10
POP 12HR 80 100 50 0 0
RAIN SHWRS SC NM NM NM O O SC IS SC IS IS
TSTMS SC SC IS IS
Obvis PF PF PF PF
MIX HGT 3 4 3 1 1 1 <1 1 2 2 3 2 <1 <1 <1 1 4 6 5 1
T WIND DIR SW W W W SW SW W NW NW NW NW NW NW NW NW NW W SW SW S
T WIND SPD 17 18 21 10 4 10 2 6 6 11 18 18 13 11 9 10 6 8 12 16
DISPERSION FR FR PR PR GD GD FR FR PR
ADI 38 48 51 9 4 9 2 9 15 32 54 21 12 10 6 18 33 54 78 11
MAX LVORI 4 4 4 5 6 5 6 8 5 4 4 4 4 4 5 3 1 1 1 2
STABILITY D D D D D D D C C C C D D D E B A B B E
CEILING 300 300 300 300 200 None None None None None
STA PRES 26.57 26.59 26.59 26.53 26.53 26.54 26.59 26.63 26.67 26.60
Date Sat 05/09/26Sun 05/10/26Mon 05/11/26Tue 05/12/26
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 46 63 51 72 53 62 42 62
TEMP 46 51 61 62 53 56 68 65 58 54 60 55 44 44 60 56
DEWPT 41 43 46 50 47 49 54 55 52 49 47 40 37 36 39 40
RH 83 74 58 65 80 77 61 70 80 83 62 57 76 73 46 55
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC FW FW SC SC B1 B2 B1 B1 B1 SC SC SC FW
POP 12HR 5 5 5 50 60 40 10 0
RAIN SHWRS IS SC NM SC SC IS
TSTMS SC 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