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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
131 AM EDT Wed Apr 22 2026
NCZ003-230800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
131 AM EDT Wed Apr 22 2026
Date 04/21/26 Wed 04/22/26 Thu 04/23/26 Fri
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 45 81 51 83 54
TEMP 50 46 50 70 79 80 72 62 56 53 56 74 80 81 74 65 59 56 58
DEWPT 35 36 37 42 37 38 40 40 41 41 43 47 46 45 45 46 46 45 46
MIN/MAX RH 68 22 66 28 70
RH 56 68 61 36 22 22 31 44 57 64 62 38 30 28 35 50 62 66 64
WIND DIR SW SW W W W W W NW NW NW NW NW W W W NW NW NW NW
WIND SPD 5 5 5 9 10 10 6 5 4 4 3 4 5 5 4 4 3 4 3
WIND GUST 19 23 21
CLOUDS SC FW FW FW FW FW SC SC FW FW FW FW FW SC SC FW FW FW FW
CLOUDS(%) 33 12 16 11 12 21 36 34 10 7 6 7 18 33 26 20 15 12 24
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 0 5 5
MIX HGT <1 <1 <1 5 9 9 <1 <1 <1 <1 <1 5 10 10 <1
T WIND DIR SW SW SW W W W W W NW NW NW NW NW W SW
T WIND SPD 3 3 3 24 21 20 6 3 3 3 3 13 9 9 4
DISPERSION PR PR PR PR VP VP VP VP VP VP
ADI 2 2 3147114110 5 2 2 2 3 91103105 2
MAX LVORI 3 3 3 1 1 1 2 2 3 3 3 1 1 1 2
STABILITY F F A B C C E F F F A A A A F
CEILING None None None None None None None None
STA PRES 29.09 29.06 28.97 28.99 29.00 29.01 28.91
Date 04/24Sat 04/25/26Sun 04/26/26Mon 04/27/26Tue 04/28/26
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 83 57 81 54 72 49 72 54 74
TEMP 81 75 62 59 77 71 58 55 69 67 54 51 68 67 57 55 67 68
DEWPT 42 48 49 51 55 57 55 51 50 48 47 46 49 49 50 51 57 55
RH 25 38 62 75 47 61 90 86 51 50 77 83 51 52 77 86 70 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC B1 B2 B2 B1 SC B1 SC B1 B1 SC B1 B1 B2 B1
POP 12HR 10 20 70 60 30 20 20 50 60
RAIN SHWRS IS SC NM NM SC SC SC IS IS IS IS SC SC NM 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