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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Tue Mar 31 2026
NCZ005-010800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
802 PM EDT Tue Mar 31 2026
Date 03/31/26 Wed 04/01/26 Thu 04/02/26 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 60 84 62 83 61
TEMP 68 66 62 62 73 82 84 78 71 68 64 62 74 81 83 76 69 66 63 62
DEWPT 55 56 56 57 60 59 57 59 58 59 58 58 60 59 55 54 53 58 59 60
MIN/MAX RH 86 40 87 39 94
RH 63 70 81 84 64 46 40 52 63 73 81 87 62 47 38 46 57 75 87 93
WIND DIR SW SW SW SW SW SW SW SW S S S S SW S S S S S S S
WIND SPD 10 10 9 8 9 9 9 5 5 6 6 5 8 9 10 6 8 9 6 5
CLOUDS FW FW FW B1 SC SC SC B1 SC SC FW FW FW FW FW FW FW FW SC B1
CLOUDS(%) 23 19 18 64 49 27 42 64 46 37 20 18 20 24 14 14 7 22 50 68
VSBY 10 10 10 10 10 10 8 8 8 10 10 10 10 10 10 10 10 10 10
POP 12HR 5 30 20 10 10
RAIN SHWRS IS IS IS SC
TSTMS IS IS
MIX HGT <1 <1 <1 <1 2 6 6 <1 <1 <1 <1 <1 3 6 6 <1
T WIND DIR SW SW SW SW SW SW SW S S S S S SW S S S
T WIND SPD 8 9 16 13 13 13 14 6 5 6 6 10 11 12 12 6
DISPERSION FR FR PR PR PR PR PR PR PR PR PR
ADI 5 8 11 15 35 61 68 5 4 3 3 11 43 55 56 3
MAX LVORI 3 3 4 4 1 1 1 2 3 3 5 4 1 1 1 2
STABILITY E D E B C C C E E F F B B C C F
CEILING None None None None None None None None None
STA PRES 29.42 29.42 29.46 29.40 29.44 29.48 29.57 29.54
Date 04/03Sat 04/04/26Sun 04/05/26Mon 04/06/26Tue 04/07/26
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 80 61 82 61 76 43 64 40 67
TEMP 78 75 66 63 81 77 67 63 74 69 53 45 61 57 46 42 63 59
DEWPT 58 57 57 58 57 55 58 58 56 49 42 36 33 34 33 34 35 35
RH 50 54 73 84 44 47 73 84 53 49 66 70 35 42 60 73 35 40
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 B1 B1 B1 SC SC SC B1 B2 B2 B2 SC SC SC SC SC SC SC
POP 12HR 30 10 20 30 70 30 0 5 10
RAIN SHWRS SC SC IS IS SC NM NM SC
TSTMS 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