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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
233 PM EDT Sun Apr 19 2026
NCZ003-200800-
RAWS 310302
36.35N 80.48W Elev. 1076 ft
233 PM EDT Sun Apr 19 2026
Date 04/19/26 Mon 04/20/26 Tue 04/21/26 Wed
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 40 64 35 68 47
TEMP 61 57 49 45 42 44 55 60 61 56 48 40 36 37 54 64 68 63 56 51 48 50
DEWPT 18 22 24 25 26 30 33 28 23 21 21 22 21 22 26 29 32 34 35 35 36 37
MIN/MAX RH 57 22 56 26 65
RH 19 25 37 45 53 57 43 29 23 25 34 48 54 54 34 27 26 34 45 54 63 61
WIND DIR NW NW W SW W NW NW NW NW N N N N NE S SW SW S SW SW SW SW
WIND SPD 13 9 4 3 4 4 8 12 11 8 5 4 3 3 3 4 6 6 6 5 5 5
WIND GUST 24
CLOUDS FW CL CL CL CL FW SC SC CL CL CL CL CL CL CL FW SC FW SC SC FW SC
CLOUDS(%) 18 1 2 3 3 18 28 26 4 4 4 5 4 5 5 13 29 24 32 35 22 40
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 5
MIX HGT 6 <1 <1 <1 <1 <1 5 8 7 <1 <1 <1 <1 <1 3 4 4 <1
T WIND DIR NW NW W SW SW SW NW W NW NW N N N NE SW SW SW SW
T WIND SPD 20 12 2 3 4 4 14 23 21 14 3 2 2 1 2 6 8 8
DISPERSION PR VP VP VP PR PR VP VP PR PR PR PR
ADI 93 8 1 2 2 5 90113106 10 2 1 1 1 10 37 44 4
MAX LVORI 1 2 2 2 2 3 1 1 1 2 2 2 3 2 2 1 1 2
STABILITY C E F G F A B C C E F F G A A A B F
CEILING None None None None None None None None None None
STA PRES 29.02 29.12 29.13 29.17 29.14 29.23 29.28 29.29 29.17
Date 04/22Thu 04/23/26Fri 04/24/26Sat 04/25/26Sun 04/26/26
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 80 52 82 56 84 59 82 57 76
TEMP 77 73 56 56 80 75 61 59 82 77 63 61 79 75 61 59 73 70
DEWPT 42 44 46 46 48 47 47 47 46 48 49 51 54 55 55 54 54 52
RH 29 35 69 69 33 37 60 64 28 36 60 70 42 50 81 83 51 53
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC FW FW FW CL SC SC FW FW B1 SC SC B1 B1 B1 B1 B1 B1
POP 12HR 5 5 5 0 5 20 40 30 40
RAIN SHWRS IS SC SC SC SC IS 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