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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Wed Jul 23 2025
NCZ019-240800-
RAWS 312001
36.23N 81.32W Elev. 2380 ft
802 PM EDT Wed Jul 23 2025
Date 07/23/25 Thu 07/24/25 Fri 07/25/25 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 65 85 68 88 71
TEMP 69 67 67 68 76 82 83 78 72 70 69 72 80 85 86 82 77 75 73 75
DEWPT 60 60 61 63 66 65 66 67 66 65 64 65 70 70 70 70 67 66 66 67
MIN/MAX RH 87 55 85 56 83
RH 73 78 81 84 71 56 57 69 81 84 84 79 72 61 59 67 71 74 79 76
WIND DIR NE NE NE NE E SE SE SE SW W W W W SW SW W NW NW NW NW
WIND SPD 2 1 1 1 2 3 3 2 1 1 1 1 1 2 2 2 2 2 2 2
CLOUDS CL FW SC B1 SC FW SC FW FW FW FW FW FW B1 B1 FW FW FW FW SC
CLOUDS(%) 1 16 37 58 41 19 28 10 11 12 8 10 10 53 53 19 15 11 15 40
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 10 5 20 5
RAIN SHWRS IS IS
TSTMS IS IS
MIX HGT <1 <1 <1 1 3 4 5 <1 <1 <1 <1 <1 4 6 4 <1
T WIND DIR NE NE E SE S S S S NW W W NW NW NW SW W
T WIND SPD 2 2 1 4 2 1 3 5 2 3 3 3 8 3 3 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 7 9 6 21 3 1 2 2 3 41 22 18 2
MAX LVORI 3 5 6 4 3 3 2 3 5 5 5 5 3 2 2 3
STABILITY G G F B A A A G G G G A A B B G
CEILING None None None None None None None None None
STA PRES 28.09 28.10 28.13 28.07 28.06 28.05 28.06 27.99
Date 07/26Sun 07/27/25Mon 07/28/25Tue 07/29/25Wed 07/30/25
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 89 72 90 73 91 71 92 70 92
TEMP 86 82 75 75 87 83 76 76 88 83 74 75 88 84 74 74 89 84
DEWPT 72 70 68 69 71 70 69 69 69 68 66 66 68 69 68 67 67 68
RH 63 67 79 82 59 65 79 79 54 61 76 74 52 61 82 79 48 59
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS SC B1 SC FW SC B1 SC FW SC B1 SC CL FW B1 SC FW SC B1
POP 12HR 40 10 50 10 40 20 30 20 40
RAIN SHWRS SC SC IS SC IS SC IS SC
TSTMS SC SC IS SC IS SC IS SC
$$
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
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