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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Thu Apr 30 2026
VAZ018-302000-
RAWS 444002
37.56N 80.18W Elev. 2702 ft
801 AM EDT Thu Apr 30 2026
Date Thu 04/30/26 Fri 05/01/26 Sat 05/02/26
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 62 41 69 45 60
TEMP 57 60 60 51 45 43 41 44 58 66 68 59 50 47 46 46 53 57 59 52
DEWPT 41 36 35 33 33 33 32 33 35 33 36 36 38 38 37 37 37 35 33 31
MAX/MIN RH 39 73 29 71 38
RH 55 41 39 50 62 67 70 65 42 29 31 42 63 71 71 71 54 43 37 44
WIND DIR NW NW NW NW NW NW NW W S SW W NW NW NW NW NW NW NW NW NW
WIND SPD 13 13 13 6 3 2 2 1 3 6 6 4 2 2 2 2 4 5 6 6
WIND GUST 25 25 25 23 16 14 19 19 18 14 12 12 12 14 16 18 23
CLOUDS SC SC SC FW SC SC B2 B1 FW SC B1 B1 B2 B2 B2 B2 B2 B2 B1 B1
CLOUDS(%) 35 40 33 7 32 35 78 67 21 36 52 65 71 76 83 85 81 75 65 51
VSBY 10 10 10 10 10 10 7 10 10 10 9 9 9 6 9 10 10 10 10 10
POP 12HR 0 0 10 20 40
RAIN SHWRS IS IS SC SC SC SC IS
MIX HGT 4 5 5 2 <1 <1 <1 <1 4 8 8 1 <1 <1 <1 2 5 6 6 1
T WIND DIR NW NW NW NW NW NW W W SW SW W NW NW NW N NW W W NW NW
T WIND SPD 21 19 20 19 12 4 2 2 4 13 17 13 14 11 6 5 3 9 12 21
DISPERSION PR VP VP VP VP VP VP VP PR
ADI 83 81 85 9 6 2 1 2 23115 85 9 7 5 3 11 19 41 57 15
MAX LVORI 1 1 1 2 3 3 3 3 2 1 1 2 3 3 3 3 2 1 1 2
STABILITY C C C F G G F A A B C E F F F B B C C E
CEILING None None None 17400 None None 4200 4900 12300 4000
STA PRES 27.62 27.64 27.72 27.74 27.74 27.66 27.72 27.72 27.71 27.66
Date Sun 05/03/26Mon 05/04/26Tue 05/05/26Wed 05/06/26
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 37 62 41 74 52 78 55 79
TEMP 40 41 59 54 43 46 71 65 55 55 75 68 57 57 74 71
DEWPT 29 29 27 28 29 33 40 40 42 44 47 46 46 48 52 52
RH 64 62 29 36 57 60 32 40 61 66 37 45 67 72 46 51
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW CL FW CL FW SC SC FW FW SC SC SC B1 B1
POP 12HR 20 5 0 30 10 20 20 50
RAIN SHWRS IS SC IS IS IS SC SC
TSTMS 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