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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Mon May 4 2026
NCZ005-050800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
401 PM EDT Mon May 4 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 54 81 60 80 60
TEMP 78 71 62 60 55 57 72 79 80 74 67 63 61 62 68 76 79 76 68 66 64 62
DEWPT 42 44 43 44 45 48 49 48 47 49 50 53 54 56 60 60 60 60 61 63 64 62
MIN/MAX RH 74 32 82 52 100
RH 28 38 50 55 69 72 44 34 31 41 54 70 78 81 76 58 52 58 78 90100100
WIND DIR SW S SW SW SW SW SW SW S S S S S S SW SW SW SW SW SW SW SW
WIND SPD 9 5 8 8 8 8 10 12 13 10 10 11 11 10 12 13 13 8 6 5 6 6
WIND GUST 23 24 20 20 24 25 24
CLOUDS FW FW FW SC FW CL FW SC SC B1 B1 B1 B2 OV OV B2 B1 B2 B2 OV OV OV
CLOUDS(%) 18 11 7 42 23 4 6 26 49 65 58 60 82 90 90 84 68 80 81 91 93 94
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 30 50 90
RAIN SHWRS SC SC SC SC SC SC NM NM O O O
TSTMS IS SC IS IS SC IS
MIX HGT 8 <1 <1 <1 <1 1 4 6 7 <1 <1 <1 <1 1 2 4 5 <1
T WIND DIR SW SW S S S SW SW S S S S S S S SW SW SW SW
T WIND SPD 13 5 8 6 8 14 20 23 23 10 11 17 16 17 24 26 24 10
DISPERSION PR PR PR PR FR FR FR FR PR PR PR PR
ADI 113 3 4 3 4 22 92106112 9 10 15 14 28 52 74 74 7
MAX LVORI 1 2 2 3 3 3 1 1 1 2 2 3 4 3 3 1 1 3
STABILITY B F F F F B B C C D D D D D D D D E
CEILING None None None None 4900 2700 1000 3300 3300
STA PRES 29.23 29.26 29.27 29.19 29.21 29.17 29.16 29.13
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 71 45 70 48 75 51 77 57 80
TEMP 68 63 51 49 66 63 52 52 71 69 56 55 73 71 62 60 77 71
DEWPT 61 53 44 42 43 45 45 47 50 50 49 49 51 53 55 57 59 59
RH 78 70 77 77 43 52 77 83 47 51 77 80 46 53 78 90 54 66
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS OV B2 B1 SC SC SC SC SC SC SC FW FW SC SC SC SC B1 B1
POP 12HR 90 40 20 10 20 5 10 20 50
RAIN SHWRS O O SC IS IS IS IS IS IS SC
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