Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
432 PM EDT Fri Apr 17 2026
NCZ006-180800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
432 PM EDT Fri Apr 17 2026
Date 04/17/26 Sat 04/18/26 Sun 04/19/26 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 58 92 59 66 41
TEMP 87 77 68 63 59 61 82 90 91 81 75 68 65 62 60 60 59 57 50 45 42 45
DEWPT 47 49 51 50 50 52 56 54 51 53 53 55 55 51 45 37 32 30 27 27 28 29
MIN/MAX RH 76 26 72 35 58
RH 25 37 54 62 72 72 41 30 26 38 46 63 70 67 58 42 36 35 41 49 57 53
WIND DIR NW NW W N N N S SW SW S S SW W NW NW N NW NW NW NW W W
WIND SPD 6 1 1 0 0 0 2 6 8 3 4 4 5 9 10 9 8 4 3 2 2 2
WIND GUST 19 23 19
CLOUDS FW FW FW SC SC FW FW SC FW SC B1 B2 B2 OV OV B2 B1 SC CL CL CL FW
CLOUDS(%) 10 13 7 27 32 20 16 41 25 42 57 75 76 93 92 87 59 30 4 3 4 10
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 20 60 5
RAIN SHWRS IS IS NM NM SC SC
MIX HGT 9 <1 <1 <1 <1 <1 4 8 8 <1 <1 <1 <1 2 3 4 7 <1
T WIND DIR NW NW SW S SW S S SW SW S S SW SW NW NW NW NW NW
T WIND SPD 10 1 2 2 1 1 10 13 16 5 5 6 4 29 25 21 19 10
DISPERSION VP VP VP VP VP VP VP PR VP VP VP VP
ADI 95 1 1 1 1 1 54112138 3 4 5 3 78 83 84146 5
MAX LVORI 1 2 3 3 4 3 1 1 1 2 2 3 4 1 1 1 1 2
STABILITY B G G G G A A B B F E E E C C C B F
CEILING None None None None 15300 4600 4000 21000 None
STA PRES 29.33 29.33 29.33 29.24 29.20 29.20 29.41 29.43
Date 04/20Tue 04/21/26Wed 04/22/26Thu 04/23/26Fri 04/24/26
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 68 36 71 49 85 54 85 56 88
TEMP 66 61 44 41 66 64 54 53 82 76 60 58 83 76 62 59 85 79
DEWPT 28 24 23 22 26 30 34 39 42 45 47 48 49 52 51 52 50 49
RH 24 24 43 46 22 28 46 59 24 33 62 69 31 43 67 78 30 35
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW FW CL CL FW FW SC SC SC FW SC FW FW FW SC FW FW FW
POP 12HR 0 0 0 0 5 5 5 0 10
$$
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