National Weather Service United States Department of Commerce

Print This Forecast (Printer-Friendly)

EXPERIMENTAL...FIRE WEATHER POINT FORECAST MATRICES
NATIONAL WEATHER SERVICE Blacksburg VA
231 AM EDT Wed May 13 2026

NCZ003-140800-
RAWS 310301
36.48N  80.86W Elev. 1300 ft
231 AM EDT Wed May 13 2026

Date           05/12/26      Wed 05/13/26            Thu 05/14/26            Fri
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                 46          77          47          67          43
TEMP                      47 51 67 73 74 68 59 54 49 48 57 63 65 62 52 46 44 48
DEWPT                     39 41 47 50 53 55 53 48 43 39 40 41 40 40 40 39 38 39
MIN/MAX RH                   84          45          82          38          80
RH                        74 68 49 44 48 63 80 80 80 71 53 44 40 44 63 76 79 71
WIND DIR                   N  N  S SW SW  W NW NW NW NW NW NW NW NW NW NW NW NW
WIND SPD                   0  0  5  5  4  2  3  4  6 11 11 11 10  5  2  2  2  2
WIND GUST                                   13 21 23 25 23    21 19 16         
CLOUDS                    FW CL FW SC B1 B1 SC FW CL CL CL CL FW FW FW FW CL FW
CLOUDS(%)                  6  1  8 27 60 52 40 13  3  3  4  5 11  8  9  6  5  7
VSBY                      10 10 10 10 10 10 10 10 10 10 10 10 10 10            
POP 12HR                      0          20          20           0           5
RAIN SHWRS                            IS                                       
TSTMS                                 IS                                       
MIX HGT                   <1 <1  4  6  3 <1 <1 <1 <1  3  4  6  6 <1            
T WIND DIR                SW SW SW SW SW  W  W NW NW NW NW NW NW NW            
T WIND SPD                 6 10 13 11 12 10  8 13 11 17 24 23 23 13            
DISPERSION                VP             VP VP VP PR             PR VP VP VP   
ADI                        3 10 59 76 42  5  4  6  5 57 92100104  6            
MAX LVORI                  3  3  1  1  1  3  5  4  4  3  1  1  1  2            
STABILITY                  G  A  B  B  C  F  F  F  F  C  C  C  C  F            
CEILING                    None  None  None  None  None  None  None  None      
STA PRES                  28.19 28.14 28.00 27.96 27.96 28.00 28.03            


Date           05/15Sat 05/16/26Sun 05/17/26Mon 05/18/26Tue 05/19/26
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      52      85      57      89      59      90      60      89
TEMP          73 70 54 57 81 78 62 62 86 81 65 65 87 83 66 65 87 83
DEWPT         42 48 44 48 57 60 55 56 59 61 58 58 61 63 60 59 61 62
RH            33 45 69 72 44 54 78 81 40 51 78 78 42 51 81 81 42 49
WIND SPD          <15     <15     <15     <15     <15     <15     <15     <15     <15
AVG CLOUDS    FW FW SC SC SC B1 SC SC FW FW SC SC FW FW FW FW FW SC
POP 12HR            0       5      10      10      20      10      10      20      20
RAIN SHWRS                               IS             IS       IS
TSTMS                                    IS                      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