Inspired by Tygart Media Storm Tracker — Storm Updates: Oklahoma and High Plains Slight Risk, Midwest Flood Leftovers — Sunday, September 20, 2026 (Morning) — https://tygartmedia.com/storm-updates-september-20-2026-am-oklahoma-high-plains-slight/.
Severe Thunderstorm Watches 670, 671, and 672 expired overnight. The Storm Prediction Center 1300 UTC Day 1 holds a Slight Risk this afternoon and evening over parts of Oklahoma and from eastern Colorado into far western Kansas, with isolated wind and hail in a wider Marginal from the southern Plains across the Ozarks into the Ohio Valley. Weather Prediction Center flood risk is a waning Slight over leftover Midwest and Ohio Valley rain, plus a separate Slight over southwest South Dakota — not a new Moderate.
Owner / principal: deploy or hold?
Hold the regional convoy. This is a two-pocket afternoon Slight plus last night’s water tickets, not a multi-state catastrophe. Cash stays in branch: overtime for Oklahoma City, Tulsa, Lawton, and Wichita Falls late day if the southern Oklahoma Level-1 gust corridor verifies; a smaller hail kit for Lamar and the far-western Kansas High Plains; extraction overtime already earned on eastern Iowa, the Quad Cities, southeast Ohio, and the Charleston–Huntington counties.
Do not pull dumpsters or dryers off standing Saturday-night water jobs to chase an outlook. If you have one extra crew on Sunday, park it in the Slight counties that actually sit on your license map. The Saturday watch complex already spent the tree and tarp inventory across the Texas Panhandle, western Oklahoma, and west-central Kansas. Reorder glass and ice-melt-grade tarps this morning; do not buy a second set of extractors for a flood that WPC just stepped down.
GM / ops: board and on-call
Board three columns: (1) aftermath — Childress gust, Panhandle and western Oklahoma warned cells, west-central Kansas hail cores, St. Joseph–Atchison line, Iowa-to-Ohio Valley flood polygons; (2) today’s Slight — Oklahoma afternoon/evening wind-hail, High Plains hail late afternoon; (3) hold — everyone else.
On-call: Oklahoma branches stay live through evening initiation. High Plains branches cover late afternoon only. Midwest and Ohio Valley branches stay on the water board until meters clear, not because a new Moderate is coming. Do not strip standing occupied-dry jobs to staff a Slight that has produced zero LSRs on the new convective day as of the morning desk. Confirm which county still holds a flash-flood warning before you move a pump from Cedar Rapids to Tulsa.
Project manager: first four hours
Aftermath sites first. Safety walk, utilities, then photos: four elevations, roof from the ground and from a safe ladder only, interior wet rooms with a scale in frame, contents in place. Occupied homes get extract and a temporary roof cover before anyone talks rebuild. Vacant commercial gets lock, board, and a written access plan with the property manager — do not assume Sunday keys.
Wind vs water order is local. Oklahoma and High Plains afternoon work, if it verifies, is tarp and glass before extract unless rain is still coming through the hole. Midwest leftover interiors already started the clock last night: extract first, then dry. Do not open walls in the first four hours. Document the stop and call the estimator.
Estimator: wind vs water vs hail
Three scopes, three files. High Plains Slight is hail first — 1 to 2.5 inch language in the TM source — so test squares, slope-by-slope photos, and soft-metal on HVAC, not a whole-roof replace from a driveway shot. Southern Oklahoma is wind if the Level-1 corridor verifies: lifted shingles, trees into roofs, broken glass. Midwest leftovers are water: category on the meter and the source, not on the outlook map.
Likely supplements: hidden decking, additional slopes, contents pack-out on occupied Iowa and Ohio Valley homes, after-hours commercial access. What not to price from a phone photo: hail hit count, category of standing water, or a warehouse membrane tear. Wait for the test square and the moisture map. Saturday warning text is evidence of the event, not a line item.
Technician: meter, PPE, power
Category is a field call on this water, not a map call. Wind-driven rain through a roof is not automatically Category 3; overland flood and sewage backup still are. Meter the first wet room, photograph the reading next to a labeled wall, and stop. PPE for leftover flood rooms: gloves, eye protection, and boots that have not walked a clean occupied job this morning.
Outage blocks after last night’s line work: treat panels as live until the electrician or utility says otherwise. Do not open walls until the PM signs the opening. Tarps go on in daylight on the Oklahoma and High Plains side. If initiation is after dark, hold the roof and run interior extract only where power is confirmed.
Business development: who to call
Commercial property managers in Oklahoma City, Tulsa, Norman, and Lawton this afternoon — after the cell, not before. High Plains managers and farm-shop owners for hail, not a mass text. Midwest and Ohio Valley: residential adjusters and apartment GMs already sitting on Saturday-night water. Do not blast “we are in your neighborhood” across Kansas from last night’s watch. The watch is closed. Call people who already have a ticket or a live warning county.
Commercial vs residential — this event only
Oklahoma and High Plains commercial is roof and envelope: warehouse membrane, RTUs, glass storefronts, after-hours access on a Sunday. Residential there is contents plus steep-slope shingles and trees. Midwest leftover commercial is slab and racking in wet warehouses and Sunday lockouts. Residential leftover is occupied ALE, category fights, and the mold clock that started Saturday night. Do not mix those two boards on one crew sheet.
Pulse back to source
Weather pulse and the next official convective update live on Tygart Media: Storm Updates: Oklahoma and High Plains Slight Risk, Midwest Flood Leftovers — Sunday, September 20, 2026 (Morning). Operator deep reads that fit today: Storm Damage Restoration: The Complete Professional Guide and Wind and Hail Damage: Scope Development. Water leftovers still map to the storm water intrusion protocol.
Informational only — not an official National Weather Service warning. Verify the county product at weather.gov and the convective outlook at spc.noaa.gov before you roll. Turn around, don’t drown.