A weak shortwave trough drifted south into Southeast Oklahoma and Southwest Arkansas during the early morning hours of July 5th, with large scale forcing enhancing shower and thunderstorm development as they built south into more unstable air across East Texas, extreme Southwest Arkansas, and Northwest Louisiana. A southwesterly low level flow was enough to sustain these showers and thunderstorms as they shifted southeast, with some of these storms briefly severe producing damaging winds which downed trees and power lines across these areas. Given the very moist air mass in place, these storms were also prolific rainfall producers, with widespread rainfall amounts of 2-4 inches observed. In fact, some areas of Western Harrison County recorded 4-6+ inch amounts where thunderstorms repeatedly moved over this area between 300-700 am, with a CoCoRaHS observer about 6 miles north of Hallsville recording 6.43 inches of rainfall that morning, contributing to flash flooding in this area.
While these showers and thunderstorms weakened after daybreak on the 5th, additional scattered showers and thunderstorms developed throughout the day with diurnal heating as the trough became stationary of Northeast Texas, and a second shortwave trough drifting east from Northwest across North-central Texas, triggering a cluster of storms from the DFW Metroplex which tracked southeast into East-Central Texas as it continued to tap moderate instability through the afternoon and evening. Some of these storms became severe as they entered portions of Smith and Rusk Counties, with damaging winds downing trees and power lines over these areas. These storms eventually weakened during the late evening over extreme Eastern Texas as they entered an environment with reduced instability.

Flash Flood in HARRISON, TEXAS
From 05-JUL-20 06:30:00 to 05-JUL-20 08:30:00 (CST-6)
Location: WALKERS MILL
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer and retired NWS employee reported that Page Creek ran out of its banks and flooded portions of Walker Mill Road north of Hallsville. High water flooded several nearby fields and yards, and sandbags were needed to keep the high water from entering a home.

Thunderstorm Wind in SMITH, TEXAS
From 05-JUL-20 19:40:00 to 05-JUL-20 19:40:00 (CST-6)
Location: STARRVILLE
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Trees and power lines were blown down southeast of Winona.

Thunderstorm Wind in RUSK, TEXAS
From 05-JUL-20 20:17:00 to 05-JUL-20 20:17:00 (CST-6)
Location: SELMAN CITY
Magnitude: 65.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trees and power lines were blown down on Highway 42 between Highway 323 and Highway 64.

Thunderstorm Wind in MARION, TEXAS
From 05-JUL-20 02:00:00 to 05-JUL-20 02:00:00 (CST-6)
Location: NORTH JEFFERSON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A tree was blown down onto power lines on Highway 49 near FM 728 west of Jefferson. Another tree was blown down on FM 729 west of Jefferson.

Thunderstorm Wind in HARRISON, TEXAS
From 05-JUL-20 02:50:00 to 05-JUL-20 02:50:00 (CST-6)
Location: WALKERS MILL
Magnitude: 61.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Several trees were blown down near Hallsville.