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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 AM EDT Fri Apr 24 2026
NCZ006-242000-
RAWS 310801
36.37N 79.29W Elev. 580 ft
801 AM EDT Fri Apr 24 2026
Date Fri 04/24/26 Sat 04/25/26 Sun 04/26/26
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 88 57 86 55 69
TEMP 80 86 85 76 67 63 59 61 79 84 77 69 63 61 58 56 60 65 69 63
DEWPT 49 46 45 46 48 49 50 53 56 54 56 60 61 60 58 56 55 51 49 47
MAX/MIN RH 23 77 36 100 50
RH 34 25 25 34 50 60 72 75 45 36 48 73 93 97100100 84 60 49 56
WIND DIR NW SW W SW SW SW SW SW SW SW W N N NW N NE NE NE NE NE
WIND SPD 2 4 4 2 2 2 2 2 4 6 6 2 2 2 3 5 6 8 9 5
CLOUDS FW SC SC SC FW FW FW FW FW B2 B2 OV OV B2 B2 B2 B2 B1 SC SC
CLOUDS(%) 19 36 40 47 14 16 17 16 19 78 85 91 89 82 80 86 78 56 38 38
VSBY 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 10 10 70 80 30
RAIN SHWRS NM NM O O NM NM SC SC IS IS
TSTMS IS IS IS IS
MIX HGT 5 11 8 <1 <1 <1 <1 <1 5 8 6 <1 1 1 1 1 2 3 4 <1
T WIND DIR W W W W W SW SW SW W SW SW NW N S S N NE NE NE NE
T WIND SPD 3 8 10 4 3 4 4 3 11 12 14 21 8 3 4 5 18 17 16 20
DISPERSION VP VP VP VP VP VP VP VP PR
ADI 23 97 97 2 2 2 2 3 66 63 67 10 4 2 2 10 48 57 74 9
MAX LVORI 2 1 1 2 2 3 3 4 1 1 1 3 6 10 9 8 4 1 1 2
STABILITY A A A F G G G A A C C F F F F C C C B F
CEILING None None None None None 7600 2200 400 900 None
STA PRES 29.24 29.15 29.16 29.15 29.16 29.11 29.18 29.19 29.31 29.39
Date Mon 04/27/26Tue 04/28/26Wed 04/29/26Thu 04/30/26
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 45 73 47 75 56 81 54 80
TEMP 49 48 69 66 51 50 71 71 60 59 78 74 60 57 77 73
DEWPT 45 43 44 45 46 47 54 56 57 57 55 53 51 50 49 49
RH 86 83 40 47 83 89 55 59 90 93 45 48 72 77 37 43
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC SC FW FW FW SC B2 B2 SC SC B1 B1 SC SC B1 B1
POP 12HR 10 5 20 50 30 40 20 30
RAIN SHWRS IS SC SC IS SC SC SC IS IS 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