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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Thu Apr 23 2026
NCZ003-240800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
801 PM EDT Thu Apr 23 2026
Date 04/23/26 Fri 04/24/26 Sat 04/25/26 Sun
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 55 83 57 78 52
TEMP 65 59 56 58 76 81 81 74 66 60 57 60 73 77 73 68 63 57 53 55
DEWPT 47 46 45 47 49 49 49 49 50 50 50 51 56 57 58 58 56 54 52 51
MIN/MAX RH 68 31 77 50 95
RH 52 62 66 67 39 33 33 41 56 69 77 72 55 50 59 70 78 90 96 86
WIND DIR W NW NW NW NW SW SW SW W W W W W W W W W NW N N
WIND SPD 4 4 3 3 3 5 4 4 4 3 3 3 5 6 5 5 5 5 5 6
CLOUDS FW FW FW FW SC SC SC FW FW FW SC B1 B1 B2 B2 B2 B1 SC SC SC
CLOUDS(%) 9 15 7 10 33 35 39 20 16 24 36 53 61 86 86 76 65 50 50 33
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 10 80 60
RAIN SHWRS SC SC O NM SC SC SC IS
TSTMS SC IS
MIX HGT <1 <1 <1 <1 7 9 8 <1 <1 <1 <1 <1 2 4 2 <1
T WIND DIR W W NW NW NW SW W W W W W W W W W SW
T WIND SPD 3 3 3 2 4 9 12 3 3 3 2 2 3 8 12 9
DISPERSION VP VP VP VP VP VP VP PR PR PR PR
ADI 2 2 2 2 38 94122 2 2 2 1 2 9 29 31 6
MAX LVORI 2 3 3 3 1 1 1 2 3 3 4 3 2 2 1 3
STABILITY G G G A A A A F F G G B C C C E
CEILING None None None None None None 6600 4800 5100
STA PRES 28.89 28.87 28.86 28.78 28.79 28.77 28.81 28.79
Date 04/26Mon 04/27/26Tue 04/28/26Wed 04/29/26Thu 04/30/26
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 74 47 70 52 72 54 79 53 76
TEMP 70 70 54 49 66 66 56 54 65 69 58 57 76 71 57 55 73 69
DEWPT 50 48 45 43 45 46 46 50 57 57 55 55 52 48 48 48 47 45
RH 49 45 71 80 47 48 69 86 75 66 90 93 43 44 72 77 40 42
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC SC SC SC B1 SC B2 B2 B2 SC B1 B1 B1 SC SC B1 B1
POP 12HR 20 20 10 40 70 30 30 20 40
RAIN SHWRS IS IS IS SC NM SC IS SC SC SC IS SC SC
TSTMS 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