DrJack's BLIPSPOT for: WED 12/17 FrontRoyal_VA 709ft pt33650@38.996,-78.097,836ft BLIPSPOT sfc.temp. adjusted by -0.4 degF SPONSORED BY: Skyline Soaring Club RUC - Last Analysis,Validation Time = 09Z 21Z ----------------------------------- VALIDATION TIME --------------------------------------- 12Z 13Z 14Z 15Z 16Z 17Z 18Z 19Z 20Z 21Z 22Z 23Z 0Z ------------------------------------------------------------------------------------------- Update Time - - - - - - 0659z - - 1002z - - - Update Time FCST PERIOD - - - - - - 12 hr - - 12 hr - - - FCST PERIOD Temp@2m - - - - - - 55.2 - - 53.2 - - - Temp@2m Sfc.Heating - - - - - - 21 - - -21 - - - Sfc.Heating BL Depth - - - - - - 76 - - 75 - - - BL Depth Hcrit - - - - - - 768 - - 768 - - - Hcrit BL Top - - - - - - 785 - - 784 - - - BL Top Hgt.Variab. - - - - - - 2604 - - 2568 - - - Hgt.Variab. W* - - - - - - 51 - - 16 - - - W* B/S - - - - - - 1 - - 1 - - - B/S BL Wind - - - - - - 8 - - 5 - - - BL Wind Direction - - - - - - 229 - - 284 - - - Direction Wind Shear - - - - - - 0 - - 0 - - - Wind Shear Max.Converg - - - - - - -1 - - 1 - - - Max.Converg CLOUDpotent - - - - - - -5122 - - -4489 - - - CLOUDpotentl sfcLCL - - - - - - 5908 - - 5273 - - - sfcLCL ODpotential - - - - - - -12951 - - -10838 - - - ODpotential blCL - - - - - - 13736 - - 11622 - - - blCL maxRH - - - - - - 45 - - 47 - - - maxRH CAPE - - - - - - 0 - - 0 - - - CAPE Temp@2m - - - - - - 55.2 - - 53.2 - - - Temp@2m DewPt@2m - - - - - - 32.3 - - 33.2 - - - DewPt@2m Temp@Bot - - - - - - 54.9 - - 54.3 - - - Temp@Bot DewPt@Bot - - - - - - 31.4 - - 32.3 - - - DewPt@bot Sfc.Heating - - - - - - 21 - - -21 - - - Sfc.Heating BL Depth - - - - - - 76 - - 75 - - - BL Depth EXPERIMENT - - - - - - 0 - - 0 - - - EXPERIMENT EXPERIMENT2 - - - - - - 4 - - 4 - - - EXPERIMENT2 PROFILES OF WIND SPEED [kt] AND DIRECTION [degTrue] ----------------------------------- VALIDATION TIME --------------------------------------- Height 12Z 13Z 14Z 15Z 16Z 17Z 18Z 19Z 20Z 21Z 22Z 23Z 0Z [ft] ------------------------------------------------------------------------------------------- [ft] 95779 41 282 57 283 95779 88936 46 285 45 285 88936 83595 42 295 30 281 83595 79095 24 277 24 260 79095 75144 15 246 23 236 75144 71638 15 238 20 219 71638 68459 11 255 10 227 68459 65517 31 265 33 265 65517 62778 42 241 39 252 62778 60128 41 238 40 241 60128 57363 44 241 45 241 57363 54477 50 242 52 247 54477 51707 58 243 63 246 51707 49207 67 245 66 247 49207 46960 72 244 70 247 46960 44910 71 244 71 251 44910 43025 72 245 80 253 43025 41293 79 246 83 251 41293 39706 80 247 83 250 39706 38244 76 249 80 250 38244 36884 81 250 78 252 36884 35583 88 247 77 252 35583 34267 87 243 77 250 34267 32903 82 237 78 248 32903 31488 80 241 79 248 31488 30006 78 247 80 249 30006 28444 74 247 78 251 28444 26804 68 243 70 252 26804 25087 66 248 61 253 25087 23295 61 254 56 257 23295 21429 57 255 54 261 21429 19484 58 252 52 262 19484 17455 59 249 50 261 17455 15384 60 252 45 264 15384 13389 59 258 39 271 13389 11574 55 263 37 278 11574 9961 49 268 37 283 9961 8526 43 277 38 286 8526 7253 41 288 37 288 7253 6125 39 296 36 289 6125 5129 36 291 35 286 5129 4254 33 276 34 279 4254 3485 28 261 30 272 3485 2801 24 246 24 269 2801 2197 21 236 20 270 2197 1692 19 233 17 272 1692 1305 17 231 15 275 1305 1039 14 230 12 279 1039 877 12*230 9 282 877 784 8*229 5*284 784 PARAMETER KEY: (basic parameter information is provided at http://www.drjack.info/BLIP/INFO/basic_parameters.html) (more complete parameter descriptions are at http://www.drjack.info/BLIP/RUC/INFO/parameters.html) (additional help is at http://www.drjack.info/BLIP/INFO/index.html, e.g. "For NEW USERS" section) --------------------------------------------------------------------------------------------------- Update Time = UTC Time of BLIPSPOT calculation FCST PERIOD = Hours from model initialization time Temp@2m = Temperature at 2m AGL [F] Sfc.Heating = Surface Heating of atmosphere [W/m^2] BL Depth = Depth of the Boundary (Mixing) Layer [ft] Hcrit = Height of Critical Updraft Strength [ftMSL] BL Top = Height of Boundary Layer Top (TI=0 height) [ftMSL] Hgt.Variab = Thermal Height Variability (difference between TI=+4{F} & TI=0 Heights) [ft] W* = Thermal Updraft Velocity (subtract glider sink rate to get vario) [fpm] B/S = Buoyancy/Shear Ratio (thermals may be unworkable if 5 or less) BL Wind = Wind Speed averaged through BL [kt] Direction = Wind Direction averaged through BL [degTrue] Max.Converg = Max. Vertical Velocity created by BL Convergence [x10^-2 kt] (note: BLIPMAPs provide better evaluation since convergence lines are usually mobile CLOUDpotent = Expect clouds at or above sfcLCL if positive (difference between H(TI=0) & sfcLCL) [ft] sfcLCL = Base of Lowest Clouds, if CLOUDpotent>0 (LCL = Lifting Condensation Level based upon sfc. humidity) [ftMSL] ODpotential = Expect extensive clouds at blCL if positive (difference between H(TI=0) & blCL) [ft] bLCL = Base of Extensive Clouds, if ODpotential>0 (bl CL = Condensation Level based upon BL humidity) [ftMSL] maxRH = Maximum Relative Humidity in BL [%] CAPE = Convective Available Potential Energy [J/kg] Temp@2m = Temperature at 2m AGL [F] DewPt@2m = Dew Point Temp. at 2m AGL [F] Temp@Bot = Temperature at 16m AGL (bottom of grid) [F] (intended for DrJack's use) DewPt@Bot = Dew Point Temp. at 16m AGL (bottom of grid) [F] (intended for DrJack's use) Sfc.Heating = Surface Heating of atmosphere [W/m^2] BL Depth = Depth of the Boundary (Mixing) Layer [ft] EXPERIMENT = Mystery variable for test purposes (intended for DrJack's use) * = Indicates BL Top (TI=0 Height) on profiles Note: printed heights are for 18Z - heights for other times differ slightly Results neglect thermals created by small-scale features not resolved by the smoothed model topography