Print This Forecast (Printer-Friendly)
EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
1201 PM EDT Mon Apr 27 2026
VAZ046-272000-
RAWS 441101
37.39N 78.80W Elev. 804 ft
1201 PM EDT Mon Apr 27 2026
Date Mon 04/27/26 Tue 04/28/26 Wed 04/29/26
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 70 42 67 52 73
TEMP 68 70 63 53 47 43 47 57 63 66 63 57 55 52 55 65 69 72 68
DEWPT 41 41 42 42 41 40 41 45 48 50 52 52 51 51 53 58 61 61 60
MAX/MIN RH 35 89 56 98 70
RH 37 35 46 66 79 89 79 64 58 56 67 83 86 96 93 78 76 68 76
WIND DIR E E E SE SE S SW S S SW S S S S S S S S SW
WIND SPD 6 6 4 4 3 2 2 5 6 5 3 3 2 2 3 5 9 9 8
WIND GUST 18
CLOUDS FW FW SC FW SC SC B1 B2 OV B1 B1 SC B1 B1 B2 B2 OV OV B1
CLOUDS(%) 6 9 29 24 34 32 64 73 91 68 58 34 58 67 78 86 98 98 66
VSBY 10 10 10 10 10 10 10 9 10 10 10 10 9
POP 12HR 0 0 60 20 100
RAIN SHWRS IS NM SC IS IS IS NM NM O O SC
TSTMS SC SC
MIX HGT 4 4 <1 <1 <1 <1 <1 2 3 3 <1 <1 <1 <1 <1 1 2 2 <1
T WIND DIR E E E SE SE S S SE S SW SW SE S S S SE S SW NW
T WIND SPD 9 9 4 6 3 3 10 6 12 17 10 2 2 5 10 9 9 11 3
DISPERSION VP VP VP VP VP VP VP VP PR
ADI 48 47 2 3 2 2 11 15 38 60 5 1 1 3 11 17 25 28 3
MAX LVORI 1 1 2 3 5 7 4 2 1 1 3 5 7 8 5 3 3 3 4
STABILITY B B F F G F B C C C G G F F B C C C D
CEILING None None None 4500 1200 None 1800 500 500
STA PRES 29.50 29.53 29.49 29.51 29.39 29.34 29.24 29.10 28.95
Date Thu 04/30/26Fri 05/01/26Sat 05/02/26Sun 05/03/26
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 51 69 41 68 42 65 38 68
TEMP 57 52 66 62 46 45 66 62 49 46 62 58 45 43 65 62
DEWPT 52 47 38 34 34 34 36 36 37 38 36 35 32 34 34 35
RH 83 83 36 35 63 65 33 38 63 73 38 42 60 70 31 36
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 FW FW FW FW FW FW SC SC B1 B1 SC FW FW FW SC
POP 12HR 50 10 5 20 30 30 10 5
RAIN SHWRS SC IS IS SC 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