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 19.3°C · Dewpoint 14.3°C
Freezing level 11,165ft AGL · Wet bulb zero 10,477ft AGL
📡 Radar Beam Position (MDT · KLWX · 8,493ft AGL)
Beam is below the freezing level — sampling liquid water. Best-case radar QPE scenario.
💧 Raindrop Trajectory (MDT)
Drop sampled at 8,493ft AGL drifts 6.57 miles WSW before surface impact
Mid-level flow: 250°/64.1kt · Terminal velocity 7 m/s assumed
💨 Wind Shear & Storm Structure
0-6km bulk shear: 62kt · Tilt toward 245° WSW
Low-level lapse rate: 5.7°C/km · Directional shear veering with height → warm air advection
🏜️ Dry Air & Moisture
Precipitable water: 34.34mm · CAPE: 0J/kg
Dry layer (T-Td>10°C) first found at: 42,990ft 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 |
0.570" |
11,165 |
10,477 |
34.34 |
6.57mi WSW |
62 |
245° WSW |
42,990 |
| CXYCapital City |
KLWX |
8,413 |
0.570" |
11,165 |
10,477 |
34.34 |
6.5mi WSW |
62 |
245° WSW |
42,990 |
| THVYork |
KLWX |
5,874 |
0.530" |
14,022 |
10,140 |
18.52 |
1.68mi SW |
21 |
234° SW |
5,547 |
| SEGSelinsgrove |
KCCX |
6,608 |
0.840" |
10,473 |
10,215 |
34.6 |
1.54mi WNW |
67 |
257° WSW |
22,692 |
| LNSLancaster |
KDIX |
9,420 |
0.430" |
11,065 |
10,487 |
33.58 |
7.16mi WSW |
50 |
243° WSW |
42,957 |
| ZERSchuylkill Co. |
KCCX |
8,582 |
0.660" |
10,871 |
10,502 |
33.26 |
6.8mi SW |
50 |
242° WSW |
42,955 |
| HZLHazleton |
KBGM |
7,429 |
0.900" |
9,634 |
9,542 |
32.41 |
5.87mi SW |
79 |
239° WSW |
23,734 |
| RDGReading |
KDIX |
7,642 |
0.280" |
10,871 |
10,502 |
33.26 |
5.91mi SW |
50 |
242° WSW |
42,955 |
| MUIFt. Gap |
KCCX |
9,189 |
0.380" |
11,165 |
10,477 |
34.34 |
7.21mi WSW |
62 |
245° WSW |
42,990 |
| N79New Garden |
KDIX |
5,431 |
0.260" |
11,817 |
11,169 |
33.81 |
4.03mi SW |
55 |
241° WSW |
28,737 |