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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
802 PM EDT Wed Jul 23 2025
NCZ003-240800-
RAWS 310301
36.48N 80.86W Elev. 1300 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 87 67 92 71
TEMP 71 68 67 70 79 83 85 81 73 71 68 72 82 88 89 84 77 75 73 75
DEWPT 63 62 63 66 70 68 69 71 69 68 66 68 73 72 73 72 71 70 69 70
MIN/MAX RH 91 59 93 55 95
RH 76 81 87 87 74 61 59 72 87 90 93 87 74 59 59 67 82 84 87 84
WIND DIR N N N N SE SE SE SE N N N N W SW SW W W NW NW NW
WIND SPD 0 0 0 0 1 2 2 1 0 0 0 0 1 2 2 1 1 1 1 2
CLOUDS CL FW B1 B2 SC FW FW FW FW FW FW FW FW SC SC FW FW FW FW FW
CLOUDS(%) 4 14 65 75 39 23 19 8 12 13 9 7 9 43 43 17 18 15 16 22
VSBY 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10 10
POP 12HR 0 5 5 20 5
RAIN SHWRS IS IS
TSTMS IS IS
MIX HGT <1 <1 <1 1 3 5 5 <1 <1 <1 <1 <1 4 7 5 <1
T WIND DIR NE NE SE S SW SW S S W W W NW NW NW W W
T WIND SPD 2 2 3 6 4 2 4 6 2 2 3 2 8 4 3 4
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 2 12 20 14 29 3 1 1 2 2 45 36 20 2
MAX LVORI 4 5 7 4 3 2 2 3 6 7 7 6 3 1 2 3
STABILITY G G F B A A A G G G G A A A A G
CEILING None None None None None None None None None
STA PRES 28.30 28.31 28.34 28.27 28.26 28.24 28.25 28.18
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 93 72 93 73 95 71 95 70 96
TEMP 89 85 76 76 90 86 77 77 91 85 75 75 91 86 75 75 92 86
DEWPT 73 72 70 71 72 72 71 71 72 71 69 70 71 72 71 70 71 72
RH 59 65 82 85 56 63 82 82 54 63 82 84 52 63 87 84 51 63
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW B1 SC SC SC B1 SC FW FW B1 FW FW FW SC FW FW FW B1
POP 12HR 30 10 40 10 30 20 30 20 30
RAIN SHWRS SC SC SC IS SC IS SC
TSTMS SC SC 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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