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EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
801 PM EDT Mon May 11 2026
VAZ024-120800-
RAWS 441631
37.63N 79.51W Elev. 865 ft
801 PM EDT Mon May 11 2026
Date 05/11/26 Tue 05/12/26 Wed 05/13/26 Thu
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 42 76 50 74 46
TEMP 50 46 43 47 64 72 75 68 58 55 52 54 67 70 73 67 58 52 47 49
DEWPT 46 43 42 44 47 46 46 48 45 43 42 45 52 56 58 56 53 49 45 45
MIN/MAX RH 97 37 72 57 92
RH 86 89 96 89 54 39 36 49 62 64 69 71 59 61 59 68 83 89 93 86
WIND DIR N N N N SE S S S S S S S SW SW SW SW W W W NW
WIND SPD 0 0 0 0 2 4 5 2 3 4 4 5 6 6 6 3 3 2 4 6
WIND GUST 14 16 17 18 19 19 16 23
CLOUDS FW SC SC FW CL FW FW FW SC FW FW B1 B1 OV OV B1 B1 FW FW FW
CLOUDS(%) 17 27 28 20 2 16 7 13 39 7 22 51 58 93 93 61 61 17 10 9
VSBY 8 4 2 7 10 10 10 10 10 10 10 10 9 10 10 9 10 10 10 10
POP 12HR 0 0 10 70 40
RAIN SHWRS IS SC SC NM SC IS
TSTMS SC SC
Obvis PF
MIX HGT <1 <1 <1 <1 4 7 6 <1 <1 <1 <1 1 3 3 3 <1
T WIND DIR SW NW NW N SW W SW S S S SW SW SW SW SW S
T WIND SPD 2 2 2 2 2 9 12 5 6 8 6 13 14 20 19 8
DISPERSION VP VP VP VP VP VP VP VP VP VP VP
ADI 1 1 1 2 12 73 99 3 3 4 3 22 49 66 60 4
MAX LVORI 5 6 7 6 2 1 1 2 3 3 3 3 1 1 1 3
STABILITY G G G A A A A G G F F C C C C F
CEILING None None None None None None 4000 2200 None
STA PRES 28.64 28.66 28.69 28.61 28.59 28.52 28.46 28.35
Date 05/14Fri 05/15/26Sat 05/16/26Sun 05/17/26Mon 05/18/26
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 68 41 73 49 86 58 89 61 91
TEMP 65 57 45 45 70 66 53 53 82 79 64 62 87 81 66 65 89 84
DEWPT 42 42 41 41 44 47 45 48 57 59 56 57 58 60 57 58 60 62
RH 43 57 86 86 39 50 74 83 43 50 75 84 38 49 73 78 38 48
WIND SPD <15 <15 <15 <15 <15 <15 <15 <15 <15
AVG CLOUDS FW SC FW FW CL FW FW SC SC FW FW FW FW FW FW FW FW FW
POP 12HR 0 0 0 5 10 5 20 5 10
RAIN SHWRS 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