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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Thu Mar 19 2026
NCZ005-200800-
RAWS 310540
36.38N 79.70W Elev. 858 ft
231 AM EDT Thu Mar 19 2026
Date 03/18/26 Thu 03/19/26 Fri 03/20/26 Sat
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 29 61 39 70 52
TEMP 32 32 47 58 61 54 48 44 41 40 57 68 69 64 59 57 54 53
DEWPT 21 21 27 30 32 35 36 36 36 37 41 40 40 41 41 43 44 46
MIN/MAX RH 66 33 87 34 78
RH 63 63 45 34 33 48 63 73 82 89 55 36 35 43 51 59 69 77
WIND DIR SW SW W W W SW W W W W SW SW SW S SW SW SW W
WIND SPD 2 2 3 4 3 2 2 2 2 2 3 8 9 5 8 8 6 5
WIND GUST 19
CLOUDS B1 SC SC SC SC FW FW FW FW SC SC SC B1 B2 B1 B1 B1 B1
CLOUDS(%) 61 36 41 36 36 19 16 15 16 26 30 32 56 76 62 67 58 67
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 0 0 0 20
RAIN SHWRS IS IS IS IS
MIX HGT <1 <1 2 4 5 <1 <1 <1 <1 <1 2 4 4 <1 <1 <1 <1 <1
T WIND DIR S SW W NW W S S SW SW SW SW SW SW SW SW SW SW SW
T WIND SPD 4 3 9 6 4 2 3 3 3 3 10 21 26 10 11 10 9 5
DISPERSION VP VP VP VP VP PR PR PR PR
ADI 2 4 19 32 25 1 2 2 2 4 21111102 7 10 9 6 6
MAX LVORI 3 3 2 1 2 2 3 3 5 6 2 1 1 2 2 2 3 4
STABILITY F B B B B G G G G B B B C E D D E D
CEILING None None None None None None 18500 7300 6300
STA PRES 29.5 29.49 29.42 29.44 29.41 29.38 29.24 29.18 29.11
Date 03/21Sun 03/22/26Mon 03/23/26Tue 03/24/26Wed 03/25/26
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 51 81 57 75 37 57 38 65
TEMP 74 70 57 52 79 72 64 59 71 61 45 38 54 52 43 40 62 58
DEWPT 51 50 49 49 51 50 52 52 49 34 27 26 23 25 28 30 37 37
RH 44 49 75 89 38 46 65 78 46 36 49 62 30 35 55 67 39 45
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS B1 SC FW FW FW FW SC SC B1 B1 FW FW SC SC B1 B1 B1 SC
POP 12HR 5 0 0 10 30 10 10 10 20
RAIN SHWRS SC SC IS
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