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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 PM EDT Thu Apr 23 2026
NCZ006-240800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
231 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 56 88 59 84 54
TEMP 85 76 67 62 58 60 80 86 86 77 68 63 60 63 80 84 79 70 63 60 56 55
DEWPT 44 47 48 47 47 49 52 48 49 49 48 49 50 52 57 56 58 60 59 58 56 55
MIN/MAX RH 71 26 72 38 100
RH 24 36 50 58 67 67 38 27 28 37 49 60 69 67 45 38 49 71 87 93100100
WIND DIR W W SW W W W W W W SW SW SW SW SW W W W W W W NW N
WIND SPD 4 1 1 1 1 2 2 4 4 1 2 2 2 2 4 5 5 2 2 2 3 5
CLOUDS FW SC SC FW FW FW FW SC SC FW FW FW SC SC SC B2 B2 B2 B2 B1 B1 B1
CLOUDS(%) 9 27 37 14 13 20 8 40 26 25 19 20 26 32 50 78 79 82 75 59 59 52
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 5 70 70
RAIN SHWRS IS NM NM NM SC SC IS
TSTMS IS IS
MIX HGT 10 <1 <1 <1 <1 <1 6 11 8 <1 <1 <1 <1 <1 5 5 4 <1
T WIND DIR W W SW W W W NW W SW W SW SW SW SW NW W W W
T WIND SPD 11 3 3 4 3 2 6 10 12 4 3 4 4 4 12 5 12 11
DISPERSION VP VP VP VP VP VP VP VP VP VP VP VP
ADI 127 2 2 2 2 2 49121121 2 2 2 2 4 81 33 45 5
MAX LVORI 1 2 2 3 3 3 1 1 1 2 2 3 3 3 1 1 1 3
STABILITY A G G G G A A A A G G G G A A B C F
CEILING None None None None None None None None 6600 4200
STA PRES 29.30 29.29 29.27 29.26 29.17 29.18 29.17 29.21 29.18
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 73 45 73 50 74 56 83 53 80
TEMP 69 69 52 47 70 67 55 52 68 69 60 58 80 74 59 57 77 72
DEWPT 50 47 45 43 44 46 47 50 57 59 57 58 55 49 48 50 49 47
RH 51 45 77 86 39 47 74 93 68 70 90100 42 41 67 77 37 41
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC SC SC SC SC SC B1 B2 B2 SC SC B1 B1 SC SC B1 B1
POP 12HR 20 10 10 30 70 20 30 20 30
RAIN SHWRS IS IS SC NM SC IS IS 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