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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
931 AM EDT Sun May 3 2026
VAZ046-032000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
931 AM EDT Sun May 3 2026
Date Sun 05/03/26 Mon 05/04/26 Tue 05/05/26
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 66 43 75 56 82
TEMP 54 61 65 59 49 45 43 48 65 71 75 70 63 60 57 59 73 80 81 76
DEWPT 29 29 30 32 31 32 32 34 40 44 45 46 46 45 46 48 51 49 48 48
MAX/MIN RH 26 63 35 70 30
RH 38 29 27 36 50 60 65 58 40 38 34 42 54 58 67 67 46 34 32 37
WIND DIR NW W W SW SW SW SW SW SW SW SW SW S SW SW SW SW SW S S
WIND SPD 6 5 6 3 3 3 4 5 8 10 10 5 8 9 9 9 10 13 16 12
WIND GUST 20 18 19 20 19 20 25 28 24
CLOUDS CL CL CL FW CL SC SC SC SC SC FW SC FW SC SC FW FW SC SC B1
CLOUDS(%) 2 2 3 6 5 36 46 26 32 32 24 39 22 34 31 21 19 26 49 66
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 10 5 0
MIX HGT 5 7 7 <1 <1 <1 <1 <1 4 5 5 <1 <1 <1 <1 1 4 7 7 <1
T WIND DIR NW W W SW S S SW SW W SW SW S S SW SW SW SW SW S S
T WIND SPD 11 11 11 3 3 3 3 4 16 14 16 5 8 9 6 13 14 24 27 11
DISPERSION VP VP VP VP PR PR PR PR FR
ADI 69 91 87 2 2 2 2 4 80 87 95 3 5 6 5 21 73113134 10
MAX LVORI 1 1 1 2 2 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY B A B G G G E A B B B F E E E B B C C D
CEILING None None None None None None None None None
STA PRES 29.32 29.33 29.33 29.33 29.25 29.25 29.28 29.29 29.24
Date Wed 05/06/26Thu 05/07/26Fri 05/08/26Sat 05/09/26
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 61 78 60 74 45 70 47 71
TEMP 67 61 74 73 65 61 69 66 49 49 66 63 53 51 69 64
DEWPT 52 56 60 59 60 60 59 47 41 40 39 40 40 45 50 49
RH 59 84 62 62 84 97 70 50 74 71 37 43 61 80 51 58
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B2 B2 B2 B2 B2 B2 B2 SC FW FW SC SC SC SC B1
POP 12HR 40 60 80 80 20 10 20 30
RAIN SHWRS SC NM NM NM O O NM IS IS IS SC
TSTMS IS 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