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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
901 PM EDT Fri Apr 24 2026
NCZ005-250800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
901 PM EDT Fri Apr 24 2026
Date 04/24/26 Sat 04/25/26 Sun 04/26/26 Mon
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 57 84 56 67 45
TEMP 67 62 58 61 78 84 82 71 64 62 59 57 60 64 66 61 52 49 46 48
DEWPT 48 49 49 51 54 52 54 58 60 61 59 57 56 52 50 47 45 44 43 42
MIN/MAX RH 77 34 100 56 90
RH 50 62 72 70 43 33 38 63 87 97100100 87 65 56 60 77 83 89 80
WIND DIR N N W W W SW W NW NW W NW NE NE NE NE NE NE N N N
WIND SPD 0 0 1 3 5 8 9 5 4 3 5 6 10 11 12 10 9 8 8 8
CLOUDS SC FW FW SC FW B1 B1 OV OV B2 B2 B2 B2 B1 B1 SC SC SC SC FW
CLOUDS(%) 41 10 6 37 24 54 68 95 92 86 86 71 81 60 53 45 45 37 35 21
VSBY 10 10 10 10 10 10 9 8 6 6 6 6 6 7 7 10
POP 12HR 0 50 90 50 20
RAIN SHWRS SC O O O O SC SC SC SC IS IS IS IS
TSTMS IS IS IS
MIX HGT <1 <1 <1 <1 6 9 6 <1 <1 <1 <1 1 2 3 4 <1
T WIND DIR W SW SW SW SW SW SW N N W NW N NE NE N NE
T WIND SPD 3 3 3 3 11 13 14 17 6 2 5 16 18 13 13 21
DISPERSION VP VP VP PR VP VP PR FR PR PR PR
ADI 2 2 2 3 81 72 68 12 5 1 4 20 46 31 37 20
MAX LVORI 2 3 3 3 1 1 1 2 5 8 9 5 4 3 1 2
STABILITY G G G A A C C E E F E C C D D D
CEILING None None 5200 4600 200 600 None None
STA PRES 29.06 29.05 28.98 29.05 29.09 29.22 29.27
Date 04/27Tue 04/28/26Wed 04/29/26Thu 04/30/26Fri 05/01/26
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 71 45 72 54 80 53 76 50 73
TEMP 68 65 51 49 67 68 58 57 76 71 58 56 74 69 56 53 69 67
DEWPT 42 43 43 44 50 53 54 55 57 54 53 51 49 48 47 48 49 49
RH 39 45 74 83 54 59 86 93 52 55 83 83 41 47 72 83 49 52
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW FW FW B1 B2 SC SC B1 B1 B1 SC SC B1 SC B1 B1 B2
POP 12HR 10 10 40 20 40 30 30 40 60
RAIN SHWRS SC SC IS IS SC SC SC SC IS SC SC SC SC NM
TSTMS 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