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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed Apr 8 2026
NCZ006-090800-
RAWS 310801
36.37N 79.29W Elev. 580 ft
231 AM EDT Wed Apr 8 2026
Date 04/07/26 Wed 04/08/26 Thu 04/09/26 Fri
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 35 60 33 67 40
TEMP 41 39 50 56 59 51 45 40 37 39 52 63 67 60 49 43 40 43
DEWPT 20 22 22 22 22 25 27 28 29 32 34 33 33 35 36 37 37 38
MIN/MAX RH 50 23 87 28 90
RH 42 50 33 26 24 36 49 62 72 76 50 32 28 39 61 79 89 82
WIND DIR NE NE NE NE E E E E NE NE NE E E E E SE S W
WIND SPD 6 6 8 8 6 2 2 2 2 2 3 2 2 1 1 1 1 1
CLOUDS CL CL SC SC SC SC FW B1 SC SC FW SC SC FW CL FW FW FW
CLOUDS(%) 0 0 27 33 31 31 24 55 46 40 22 39 33 22 5 6 6 11
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 5
MIX HGT <1 2 3 4 4 <1 <1 <1 <1 <1 2 4 5 <1
T WIND DIR NE NE NE E E E E E NE E E E E E
T WIND SPD 12 17 13 11 10 9 9 8 3 6 4 3 2 5
DISPERSION PR VP VP VP VP VP VP VP VP
ADI 6 35 51 55 58 4 4 4 2 7 14 19 14 3
MAX LVORI 2 1 1 1 1 2 2 3 5 4 2 2 2 2
STABILITY F A B B A G G F F A A A A G
CEILING None None None None None None None None
STA PRES 29.81 29.88 29.81 29.84 29.82 29.81 29.71
Date 04/10Sat 04/11/26Sun 04/12/26Mon 04/13/26Tue 04/14/26
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 77 50 82 53 82 57 83 61 87
TEMP 74 69 55 53 80 73 60 55 79 74 63 59 81 76 67 63 85 81
DEWPT 43 44 43 44 49 51 51 48 51 51 53 55 54 52 54 56 57 55
RH 33 40 64 71 34 46 72 77 38 44 70 87 39 43 63 78 39 41
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW CL CL FW SC SC SC SC FW FW FW SC SC SC SC SC SC SC
POP 12HR 0 0 5 0 0 0 0 0 5
$$
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