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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
401 PM EDT Mon May 4 2026
VAZ012-050800-
RAWS 447502
37.01N 81.18W Elev. 2540 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 46 77 54 74 52
TEMP 73 63 55 50 47 50 70 76 76 66 62 59 56 55 68 72 73 67 60 58 54 52
DEWPT 40 41 42 41 41 41 41 38 38 42 44 46 47 50 55 57 56 57 57 55 54 52
MIN/MAX RH 80 24 84 56 100
RH 30 44 61 71 79 71 35 25 25 42 52 62 72 83 63 59 55 70 90 90100100
WIND DIR SW SW SW W W SW SW S S S S S S S SW SW SW SW SW W W W
WIND SPD 4 2 2 2 2 2 4 5 6 4 4 4 5 5 6 6 6 3 2 2 2 2
WIND GUST 14 18 17
CLOUDS SC FW FW SC SC CL FW B1 B1 B2 B1 B2 B2 OV B2 OV OV OV OV OV OV OV
CLOUDS(%) 49 18 12 34 27 4 10 54 65 74 62 80 80 89 79 94 94 96 96 94 94 89
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 10 70 90 90
RAIN SHWRS IS IS NM NM NM NM O O O O O O NM
TSTMS SC SC SC IS
MIX HGT 6 <1 <1 <1 <1 <1 4 7 6 <1 <1 <1 <1 1 2 2 3 <1
T WIND DIR W S S S SW S S S S S S S S S SW SW W W
T WIND SPD 19 4 8 4 4 3 18 26 27 11 9 8 12 18 16 14 29 11
DISPERSION VP VP VP VP VP VP VP PR VP VP VP VP
ADI 88 2 4 2 2 3 95125125 8 6 5 8 23 44 43 99 5
MAX LVORI 1 2 3 3 3 3 1 1 1 2 3 3 3 4 1 1 1 4
STABILITY C F F F F A B C C E E E E C C C C F
CEILING None None None 19400 2600 700 700 700 700
STA PRES 27.18 27.20 27.18 27.14 27.14 27.08 27.10 27.14
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 64 36 67 42 70 44 74 50 74
TEMP 62 55 42 39 65 58 46 47 68 61 48 49 73 66 54 54 73 63
DEWPT 51 42 36 34 34 37 37 39 41 42 42 43 46 48 48 50 53 51
RH 67 61 79 82 31 45 71 74 37 49 80 80 38 52 80 86 49 65
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B2 B2 B1 SC FW FW FW SC SC B1 FW FW FW SC SC B1 B1 B2
POP 12HR 70 30 10 20 30 10 10 30 60
RAIN SHWRS NM NM SC IS IS SC IS SC SC NM
TSTMS IS IS 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