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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 AM EDT Wed Apr 22 2026
NCZ003-222000-
RAWS 310301
36.48N 80.86W Elev. 1300 ft
701 AM EDT Wed Apr 22 2026
Date Wed 04/22/26 Thu 04/23/26 Fri 04/24/26
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 80 50 83 53 82
TEMP 50 69 78 78 71 61 57 53 55 74 80 82 74 63 57 54 57 77 81 80 73
DEWPT 39 40 40 41 41 40 39 39 41 47 45 46 47 45 46 44 46 49 49 49 50
MAX/MIN RH 25 65 28 72 32
RH 66 35 26 27 34 46 51 59 59 38 29 28 38 52 67 69 67 37 33 34 44
WIND DIR SW W W W W NW NW NW W NW W W W NW NW NW NW W SW W W
WIND SPD 2 8 10 8 2 2 1 1 1 2 2 3 1 1 1 1 1 2 3 3 1
WIND GUST 19 20 19
CLOUDS FW FW FW SC SC FW FW CL CL CL FW SC SC FW FW FW FW FW SC SC SC
CLOUDS(%) 12 7 14 37 41 12 22 5 5 5 16 35 31 13 10 18 15 25 49 48 45
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 5 5 5 5
MIX HGT <1 6 8 8 <1 <1 <1 <1 <1 6 10 9 <1 <1 <1 <1 <1 8 10 8 <1
T WIND DIR W W W W W W NW NW NW NW W W SW W NW NW NW W W SW SW
T WIND SPD 4 25 20 17 10 3 4 6 5 13 8 9 4 3 3 4 4 10 11 9 4
DISPERSION VP VP VP VP VP VP VP VP VP
ADI 4169168145 5 2 2 3 6103 87 94 2 2 2 2 4101127 86 2
MAX LVORI 3 1 1 1 2 2 2 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY A B B B F G G G A A A A G G G G A A A A F
CEILING None None None None None None None None None None
STA PRES 28.22 28.15 28.17 28.17 28.18 28.10 28.10 28.07 28.07 28.01
Date Sat 04/25/26Sun 04/26/26Mon 04/27/26Tue 04/28/26
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 55 79 51 74 49 71 54 78
TEMP 60 59 75 71 56 53 69 67 52 50 68 66 56 55 73 71
DEWPT 49 50 57 57 53 49 50 49 46 44 48 48 51 53 59 55
RH 67 72 54 61 90 86 51 52 80 80 49 52 83 93 62 57
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC B1 B2 B2 B1 SC B1 B1 SC B2 B1 B2 B2 B2 B1
POP 12HR 20 80 40 30 20 30 60 70
RAIN SHWRS IS SC O SC SC IS SC IS IS IS SC SC NM NM SC
TSTMS 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