National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
701 PM EDT Fri May 15 2026

VAZ024-160800-
RAWS 441631
37.63N  79.51W Elev. 865 ft
701 PM EDT Fri May 15 2026

Date           05/15/26      Sat 05/16/26            Sun 05/17/26            Mon
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                 51          85          59          91          62
TEMP             70 59 56 52 56 74 83 85 78 69 64 60 63 83 90 88 80 72 66 63 66
DEWPT            43 44 42 42 46 51 53 58 58 56 55 55 57 61 60 61 64 61 60 59 61
MIN/MAX RH                   72          36          83          36          88
RH               38 57 59 69 69 44 36 40 50 63 73 84 81 47 37 40 58 68 81 87 84
WIND DIR          W NW SW  W  N SW SW SW SW SW SW  W  N  W SW  S  S  N  N  N  N
WIND SPD          1  1  1  1  0  4  8  8  2  2  1  1  0  1  3  3  1  0  0  0  0
CLOUDS           B2 SC FW FW FW FW FW SC B1 B1 B1 B1 SC FW FW FW FW FW FW CL FW
CLOUDS(%)        83 44 18 10 16  8 20 39 62 62 55 62 30 17 13 11 11 12  6  5  6
VSBY             10 10 10 10 10 10 10 10 10 10 10  8 10  9 10 10  9  8  8  8   
POP 12HR                      0          10          10          10           5
SPRINKLES        SC                                                            
Obvis                     PF                                                   
MIX HGT          <1 <1 <1 <1 <1  3  5  4 <1 <1 <1 <1 <1  4  6  6 <1            
T WIND DIR       SW NW  N  N NW  S SW SW  S SW SW  W  W NW SW  S  S            
T WIND SPD        2  1  2  2  1  4 12 16 10  5  3  3  2  8  4  6  3            
DISPERSION       VP VP VP VP             VP VP VP VP             VP VP VP VP   
ADI               1  1  1  1  1 16 74 70  5  3  2  2  2 36 35 54  2            
MAX LVORI         2  3  3  3  3  2  1  1  2  3  3  5  5  1  1  1  3            
STABILITY         G  F  G  G  A  A  B  B  F  F  F  F  A  A  A  A  G            
CEILING              None  None  None  None 11200  None  None  None  None      
STA PRES            28.57 28.58 28.61 28.53 28.55 28.58 28.65 28.62            


Date           05/18Tue 05/19/26Wed 05/20/26Thu 05/21/26Fri 05/22/26
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       92      63      90      65      87      62      75      57      75
TEMP          90 87 71 68 90 84 70 69 86 79 68 65 75 70 61 59 73 69
DEWPT         61 62 59 60 60 59 58 60 63 64 61 59 59 58 54 53 55 57
RH            38 43 66 76 37 43 66 73 46 60 78 81 58 66 78 80 53 66
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    CL FW CL CL FW FW FW FW SC B2 B1 B1 B2 B2 B1 SC B1 B1
POP 12HR            5       5       5       5      60      40      60      40      40
RAIN SHWRS                            IS NM SC SC NM NM SC IS SC SC
TSTMS                                    SC IS       SC          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