Atmospheric Cross-Section — West to East · MDT Peak Hour Sounding
Wind Hodograph — 0 to 6km AGL
Key Findings — Peak Hour Analysis
☁️ Precipitation Type
Surface: 🌧 Rain · Sfc temp 8.5°C · Dewpoint 8.3°C
Freezing level 10,061ft AGL · Wet bulb zero 10,036ft AGL
📡 Radar Beam Position (MDT · KLWX · 8,493ft AGL)
⚠️ Beam is in the bright band zone — mixed-phase reflectivity enhancement. Radar likely overestimating QPE.
💧 Raindrop Trajectory (MDT)
Drop sampled at 8,493ft AGL drifts 3.95 miles SSW before surface impact
Mid-level flow: 232°/46.0kt · Terminal velocity 7 m/s assumed
💨 Wind Shear & Storm Structure
0-6km bulk shear: 56kt · Tilt toward 221° SW
Low-level lapse rate: 2.5°C/km · Directional shear veering with height → warm air advection
🏜️ Dry Air & Moisture
Precipitable water: 33.17mm · CAPE: 0J/kg
Dry layer (T-Td>10°C) first found at: 41,230ft AGL
Deep moist column — precipitation efficiency high
Hourly Precipitation Timeline — All Stations (corrected hourly totals)
10-Station Ensemble — Peak Hour RAP Thermodynamics
| Station | Radar | Beam AGL | Event Total |
Freeze ft | WBZ ft | PW mm |
Drop Drift | Shear kt |
Storm Tilt | Dry Layer ft |
| MDTHarrisburg Intl |
KLWX |
8,493 |
0.790" |
10,061 |
10,036 |
33.17 |
3.95mi SSW |
56 |
221° SW |
41,230 |
| CXYCapital City |
KLWX |
8,413 |
0.820" |
10,061 |
10,036 |
33.17 |
3.9mi SSW |
56 |
221° SW |
41,230 |
| THVYork |
KLWX |
5,874 |
0.780" |
12,293 |
8,061 |
20.95 |
1.14mi S |
21 |
196° SSW |
6,708 |
| SEGSelinsgrove |
KCCX |
6,608 |
1.040" |
8,750 |
8,716 |
27.27 |
2.14mi SSW |
58 |
213° SSW |
24,478 |
| LNSLancaster |
KDIX |
9,420 |
0.840" |
10,113 |
10,076 |
31.4 |
4.42mi SSW |
49 |
216° SW |
42,901 |
| ZERSchuylkill Co. |
KCCX |
8,582 |
0.750" |
9,893 |
9,862 |
30.36 |
3.72mi SSW |
50 |
213° SSW |
42,915 |
| HZLHazleton |
KBGM |
7,429 |
0.910" |
8,078 |
8,044 |
26.1 |
2.84mi SSW |
61 |
223° SW |
41,355 |
| RDGReading |
KDIX |
7,642 |
0.850" |
9,893 |
9,862 |
30.36 |
3.19mi S |
50 |
213° SSW |
42,915 |
| MUIFt. Gap |
KCCX |
9,189 |
0.330" |
10,061 |
10,036 |
33.17 |
4.39mi SW |
56 |
221° SW |
41,230 |
| N79New Garden |
KDIX |
5,431 |
1.080" |
10,399 |
9,982 |
30.44 |
1.18mi S |
53 |
218° SW |
43,210 |