DrJack's TIP (Thermal Index Prediction) for ARLINGTON,WA on TUE Jul 15
*************************************************************************** **
****************** SUMMARY NUMBERS - based on NWS Tmax only *****************
AM Avg. TI HEIGHTS: 1836,3065 ftMSL @TI=-4,0degF
AM Avg. Hcrit HGT : 1576 ftMSL (Max. _flat_terrain_ thermalling height)
AM HGT VARIABILITY: 1616 ft (from TI=0to+4degF)
AM Avg. Buoy/Shear: 54 (thermals may be unworkable if 5 or less)
AM Avg UPDRAFT W* : 291 fpm (subtract glider sinkrate to get vario)
PM Avg HGT CHANGE : -536 ft @TI=+4degF
Tmax UNCERTAINTY : -8 degF (deviation of WxC Tmax from NWS forecast)
BL Max. Rel.Humid.: AM= 90% PM= 46%
AM Extensive CLOUD: Dif= -4258 ft LCL= 7098 ftMSL (if Dif>0, expect OD at LCL)
PM Extensive CLOUD: Dif= -4802 ft LCL= 6447 ftMSL (if Dif>0, expect OD at LCL)
THUNDERSTORM CAPE : AM= 0 PM= 0 (if CAPE>0, thunderstorms possible)
WED AM HEIGHTS: 2323,3538 ftMSL @TI=-4,0degF & Hcrit= 2066 ftMSL
WED PM CHANGE: -1645 ft @TI=+4
THU AM HEIGHTS: 1791,2805 ftMSL @TI=-4,0degF & Hcrit= 1213 ftMSL
*************************************************************************** ****
***************** NEAREST NWS TAF FORECAST ************************************
*** description at http://www.awc-kc.noaa.gov/awc/help/taf-decode.html ***
NO TAF FORECAST from KPAE
*************************************************************************** ****
******************** THERMAL INDEX ANALYSES ***********************************
TODAY's MORNING MODEL ANALYSES at AWO @ 07/15:12Z for Sfc= 137 ftMSL
---------------------------------------------------------------------
MAPS NWS Tmax= 74 > TI=-4,0@ 1733, 2846 Hcrit= 1344 HgtVar=1987 B/S=10 W*= 272
MAPS WxC Tmax= 66 > TI=-4,0@ 805, 1182 Hcrit= 137 HgtVar= 536 B/S=12 W*= 134
MAPS AVG Tmax= 70 > TI=-4,0@ 1182, 1733 Hcrit= 137 HgtVar=1100 B/S= 8 W*= 189
ETA NWS Tmax= 74 > TI=-4,0@ 1940, 3285 Hcrit= 1808 HgtVar=1246 B/S=99 W*= 310
ETA WxC Tmax= 66 > TI=-4,0@ 1078, 1470 Hcrit= 137 HgtVar= 470 B/S=99 W*= 166
ETA AVG Tmax= 70 > TI=-4,0@ 1471, 1940 Hcrit= 137 HgtVar=1345 B/S=99 W*= 219
MAPS MODEL FORECAST TIs at AWO for Sfc= 137 ftMSL
--------------------------------------------------
am NWS Tmax= 74 > TI=-4,0@ 1733, 2846 Hcrit= 1344 HgtVar=1987 B/S=10 W*= 272 MAPSanl:07/15:12Z
pm NWS Tmax= 74 > Change@TI=+4: -755 (-3.3F) MAPS10h:07/16:00Z
ETA MODEL FORECAST TIs at AWO for Sfc= 137 ftMSL
-------------------------------------------------
am NWS Tmax= 74 > TI=-4,0@ 1940, 3285 Hcrit= 1808 HgtVar=1246 B/S=99 W*= 310 ETAanal:07/15:12Z
pm NWS Tmax= 74 > Change@TI=+4: -317 (-1.7F) ETA12hr:07/16:00Z
WEDam NWS Tmax= 71 > TI=-4,0@ 2323, 3538 Hcrit= 2066 HgtVar=1497 B/S=60 W*= 333 ETA24hr:07/16:12Z
WEDpm NWS Tmax= 71 > Change@TI=+4: -1645 (-7.6F) ETA36hr:07/17:00Z
THUam wxc Tmax= 69 > TI=-4,0@ 1791, 2805 Hcrit= 1213 HgtVar=1136 B/S=46 W*= 259 ETA48hr:07/17:12Z
*************************************************************************** ****
**************** TODAY's *AM* TI LISTING using MAPSanal+NWStmax ***************
15-Jul-2008 12 UTC TI report from AWO MAPSanl upper air data.
Forecast max Temp.: 74.0 F
Forecast max VirtT: 75.6 F
Forecast sfc VirtT: 76.3 F
Surface elev Temp: 51.3 F
Surface elev VirtT: 53.5 F
Surface elevation: 137 ftMSL SfcAdjust:1
Station elevation: 344 ftMSL
Lowest elevation: 137 ftMSL
Lowest elev Temp: 51.3 F
Lowest elev VirtT: 53.5 F
Ford est. base of any clouds: 8150 ftMSL
Lowest elev windspeed: 1 kt
Mixing Layer windspeed: 5 kt
Convection overcast height: None ftMSL
Convection TI=0 height: 2840 ftMSL
Height *TI* Wind TI=0 Tv ------ Temperature Profile Plots ------
ftMSL degF deg kts trig degF o=Tv .=DewPt *=Adiabat 2.1 degF/division
----- ---- ------- ---- . ---- ---------------------------------------------
18000 24.5 99 | 4.7 * . o
17500 23.8 98 | 6.6 * . o
17000 23.0 97 | 8.6 * . o
16500 22.3 259 39 96 | 10.5 * . o
16000 21.6 96 | 12.5 * . o
15500 21.0 95 | 14.5 * . o
15000 20.3 94 | 16.5 * . o
14500 19.7 94 | 18.6 * . o
14000 19.0 262 37 93 | 20.6 * . o
13500 18.5 92 | 22.7 * . o
13000 17.9 92 | 24.8 * . o
12500 17.4 91 | 27.0 * . o
12000 16.9 91 | 29.1 *. o
11500 16.3 90 | 31.2 *. o
11000 15.8 274 28 90 | 33.4 *. o
10500 15.2 89 | 35.4 * o
10000 14.5 284 25 89 | 37.5 .* o
9500 13.9 283 22 88 | 39.5 .* o
9000 13.1 288 21 87 | 41.3 . * o
8500 12.1 293 19 86 | 43.0 . * o
8000 10.9 85 | 44.5 . * o
7500 9.5 301 18 84 | 45.8 . * o
7000 8.4 304 16 82 | 47.4 . * o
6500 7.7 305 15 82 | 49.4 . * o
6000 7.2 299 14 81 | 51.5 . * o
5500 6.5 289 14 80 | 53.5 . * o
5000 4.8 274 14 79 | 54.4 . * o
4500 2.4 269 13 76 | 54.7 . * o
4000 1.1 266 11 75 | 56.1 . o
3500 0.6 269 8 75 | 58.3 . o
3000 0.4 313 8 74 | 60.7 . o
2500 -0.9 330 7 73 | 62.1 . o
2000 -3.2 008 6 71 | 62.5 . o *
1500 -4.7 032 9 69 | 63.6 . o *
1000 -9.9 041 5 64 | 61.1 . o *
500 -15.3 052 1 59 ! 58.4 . o *
CLOUD FORMATION PARAMETERS from AM sounding
--------------------------------------------------------------
Expect extensive cloud formation at LCL when LCLdiff positive
or over mountains when LCL is (approx) below mt top
(1stLine=_no_warming, 2ndLine=_with_warming)
Thunderstorms possible when CAPE is positive
BLmaxRH LCLdiff LCL CCL CAPE Zsfc= 137 TI=0@ 2840
90 -4258 7098 12632 0
42 -5596 8436 12632 0
*************************************************************************** ****
**************** TODAY's *PM* TI LISTING using MAPSpm+NWStmax *****************
*NB* TI values below pm model-predicted mixing height are meaningless !
16-Jul-2008 00 UTC TI report from AWO MAPS10h upper air data.
Forecast max Temp.: 74.0 F
Forecast max VirtT: 76.1 F
Forecast sfc VirtT: 76.6 F
Surface elev Temp: 68.7 F
Surface elev VirtT: 71.3 F
Surface elevation: 137 ftMSL SfcAdjust:1
Station elevation: 344 ftMSL
Lowest elevation: 137 ftMSL
Lowest elev Temp: 68.7 F
Lowest elev VirtT: 71.3 F
Ford est. base of any clouds: 6778 ftMSL
Lowest elev windspeed: 5 kt
Mixing Layer windspeed: 8 kt
Convection overcast height: None ftMSL
Convection TI=0 height: 1645 ftMSL
Height *TI* Wind TI=0 Tv ------ Temperature Profile Plots ------
ftMSL degF deg kts trig degF o=Tv .=DewPt *=Adiabat 2.1 degF/division
----- ---- ------- ---- . ---- ---------------------------------------------
18000 24.5 254 28 98 | 5.1 *. o
17500 23.6 98 | 6.9 *. o
17000 22.8 97 | 8.8 *. o
16500 21.9 254 28 96 | 10.6 *. o
16000 21.2 95 | 12.5 * o
15500 20.5 94 | 14.5 * o
15000 19.8 94 | 16.4 * o
14500 19.1 253 28 93 | 18.4 * o
14000 18.3 92 | 20.3 .* o
13500 17.4 91 | 22.1 * o
13000 16.5 91 | 23.9 * o
12500 15.6 255 25 90 | 25.7 * o
12000 14.9 89 | 27.6 .* o
11500 14.1 88 | 29.5 .* o
11000 13.4 87 | 31.4 .* o
10500 12.6 256 19 87 | 33.3 .* o
10000 11.5 266 19 86 | 34.9 . * o
9500 10.3 84 | 36.3 . * o
9000 9.2 261 16 83 | 38.0 . * o
8500 8.6 263 13 83 | 40.0 . * o
8000 8.1 265 13 82 | 42.1 . * o
7500 7.6 82 | 44.3 . * o
7000 7.3 269 12 81 | 46.7 . * o
6500 7.0 272 11 81 | 49.1 . * o
6000 6.7 276 9 81 | 51.4 . * o
5500 6.3 280 8 80 | 53.7 . * o
5000 6.0 284 8 80 | 56.1 . * o
4500 5.6 291 7 80 | 58.4 . * o
4000 4.9 307 8 79 | 60.4 . * o
3500 4.0 309 8 78 | 62.2 . * o
3000 3.4 311 8 77 | 64.2 . * o
2500 2.3 321 8 76 | 65.7 . * o
2000 1.0 323 7 75 | 67.1 . o
1500 -0.4 324 9 74 | 68.4 . o
1000 -1.9 319 10 72 | 69.6 . o*
500 -3.4 314 8 71 ! 70.8 . o *
CLOUD FORMATION PARAMETERS from PM sounding
--------------------------------------------------------------
Expect extensive cloud formation at LCL when LCLdiff positive
or over mountains when LCL is (approx) below mt top
(1stLine=_no_warming, 2ndLine=_with_warming)
Thunderstorms possible when CAPE is positive
BLmaxRH LCLdiff LCL CCL CAPE Zsfc= 137 TI=0@ 1645
53 -4316 5961 8626 0
46 -4802 6447 8626 0
*************************************************************************** ***
******************** MISCELLANEOUS NOTES *************************************
Addtional local weather information is available at the Tmax data sites:
http://www.wunderground.com/cgi-bin/findweather/getForecast?query=98201
http://www.weather.com/weather/local/
and at the hourly data site:
http://www.weather.com/weather/hourbyhour/98201
The latest TIP forecasts are also available on the web at:
http://www.drjack.info/TIP/index.html
The hourly-updated BLIP forecasts of thermal soaring parameters at
specific locations for various times throughout the day are
available on the web at: http://www.drjack.info/BLIP/index.html
The latest BLIPMAP area forecasts of thermal soaring parameters for
the current day over CA/NV are available on the web at:
http://www.drjack.info/BLIPMAP/index.html