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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
501 PM EDT Sun May 3 2026
VAZ046-040800-
RAWS 441101
37.39N 78.80W Elev. 804 ft
501 PM EDT Sun May 3 2026
Date 05/03/26 Mon 05/04/26 Tue 05/05/26 Wed
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 42 76 55 82 61
TEMP 59 49 46 43 48 65 73 75 70 63 60 56 58 73 80 81 76 69 66 62 61
DEWPT 30 30 31 31 34 40 44 45 46 44 44 45 47 50 49 48 49 49 53 54 56
MIN/MAX RH 64 34 69 31 83
RH 33 48 55 62 58 40 35 34 42 50 55 66 67 44 34 32 39 49 63 75 84
WIND DIR W SW SW SW SW SW SW SW SW SW SW SW SW SW SW S S S S S S
WIND SPD 3 3 4 4 5 9 10 11 6 9 10 10 10 10 13 17 11 13 13 13 13
WIND GUST 20 17 19 21 20 21 26 27 25 26 27 27 27
CLOUDS CL FW SC SC SC SC SC FW SC SC SC SC FW FW SC SC B1 B1 B1 B2 OV
CLOUDS(%) 5 9 40 33 37 43 31 23 40 26 35 37 23 17 26 50 69 62 66 82 89
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 10 5 0 50
RAIN SHWRS SC SC NM
MIX HGT <1 <1 <1 <1 <1 4 6 5 <1 <1 <1 <1 1 3 7 8 <1
T WIND DIR SW S S SW SW W SW SW S S SW S SW SW SW S S
T WIND SPD 2 3 3 3 4 14 18 17 6 8 9 8 16 24 26 29 11
DISPERSION VP VP VP VP PR PR FR FR FR FR FR FR
ADI 1 2 2 2 4 66129 74 3 5 6 5 21 98123147 10
MAX LVORI 2 2 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY G G F F A B B C F E E E B B C C D
CEILING None None None None None None None None 4900
STA PRES 29.31 29.32 29.30 29.22 29.22 29.25 29.26 29.17
Date 05/06Thu 05/07/26Fri 05/08/26Sat 05/09/26Sun 05/10/26
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 77 55 64 41 69 49 71 47 75
TEMP 74 72 63 57 62 60 49 49 65 62 52 52 68 64 54 53 72 67
DEWPT 61 60 58 57 55 46 41 40 39 42 44 46 50 50 47 47 49 50
RH 64 66 84100 78 60 74 71 38 48 74 80 52 60 77 80 44 54
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B2 OV OV B2 SC FW FW FW SC SC B1 B1 SC FW FW FW
POP 12HR 70 80 80 20 5 20 40 20 10
RAIN SHWRS NM NM NM O O NM IS IS IS SC IS
TSTMS IS SC IS SC 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