Several counties reported wind damage from a strong line of thunderstorms that occurred during the night of 7/9 into 7/10.
Every event with a place to put it. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS TOP wrote it up.
Several counties reported wind damage from a strong line of thunderstorms that occurred during the night of 7/9 into 7/10.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Topeka, KS wrote its last area forecast discussion before the first event at Jul 9, 5:30 PM CST, 6 hours earlier.
Area Forecast Discussion National Weather Service Topeka KS 630 PM CDT Fri Jul 9 2021 ...Update to aviation forecast discussion... .DISCUSSION... Issued at 249 PM CDT Fri Jul 9 2021 The main focus for this forecast is the threat for storms tonight and tomorrow. This afternoon, a warm front continues to push north across the central Plains. Eastern Kansas is firmly within the warm sector and despite temperatures in the 90s and dewpoints in the 70s we are likely still well capped. This is evident by the lack of surface-based cumulus development and elevated cloud bases. Indications are that we will remain capped all day today and even through the night. A better chance of storms arrives tonight as a mid-level wave kicks off an MCS across the high Plains. The 12 UTC CAM suite is in fairly good agreement on the evolution of the MCS tonight. They have the MCS entering northern KS after midnight and exiting our area by 5 AM. If the MCS can maintain a developed cold pool and stay balanced enough through its life-cycle then it has the potential to produce damaging winds and heavy rainfall. However, most indications are that it will weaken as it enters our area and encounters a robust mid-level cap. The evolution of Saturday will be dependent on overnight/morning convection and cloud cover. Scattered showers and isolated storms may linger into the morning as a surface low and cold front pushes into the area. There is uncertainty as to timing and severity of any development later in the day as some guidance suggests showers and cloud cover will limit afternoon instability and some have the cold front almost out of our area by peak heating. The most likely location for afternoon/evening storms at this time is along and south of the I-35 corridor. Hail, damaging wind and heavy rain will be the main threats with any storms that develop Saturday afternoon/evening. The upper trough associated with this system becomes a closed low Saturday night over the MS River Valley. This will leave eastern Kansas in a position to receive wrap-around precipitation in the form of heavy showers as forecast soundings indicate a fully saturated sounding and PWATs around 1.75 inches. A potentially active pattern may continue into next week as additional waves meander through the flow into the middle of the week. Otherwise, expect cooler temperatures for the weekend behind the front with highs in the 70s and 80s, followed by a warm-up back into the 90s for the start of the work week. && .AVIATION...(For the 00Z TAFS through 00Z Saturday evening) Issued at 628 PM CDT Fri Jul 9 2021 VFR conditions should prevail through much of the period. Ongoing thunderstorms across western NE should make their way towards the terminals after 06Z. Brief reductions of VSBY and gusty northwest winds should be the primary concerns. That round of storms should clear the terminals shortly after sunrise. Additional storms are possible Saturday afternoon. && .TOP WATCHES/WARNINGS/ADVISORIES... Heat Advisory until 8 PM CDT this evening for KSZ020-034. && DISCUSSION...Jones AVIATION...Baerg
Hazardous Weather Outlook National Weather Service Topeka KS 1000 PM CDT Fri Jul 9 2021 KSZ008>012-020>024-026-034>040-054>056-058-059-110300- Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley- Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris- Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- 1000 PM CDT Fri Jul 9 2021 This hazardous weather outlook is for east central...north central and northeast Kansas. .DAY ONE...Tonight. Thunderstorms, some possibly severe, are likely tonight into early Saturday morning. Damaging wind with locally heavy rainfall are the main hazards. The best potential for these severe storms appears to be along and north of Interstate 70, where a severe thunderstorm watch is in effect through 5 AM. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Strong to severe storms are possible Saturday afternoon for areas along and southeast of the Kansas Turnpike. Large hail, damaging wind, and heavy rainfall are the main threats with any storms that develop Saturday afternoon. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. && More detailed information can be accessed at... http://www.weather.gov/top/sitrep
The Topeka radar (KTWX), 111 km away, was scanning. The volume nearest the first event began at 05:27 UTC.
13 thunderstorm wind. Local standard time, as filed.
Report of tree limbs down and bent quonset doors and mounts/hinges. Times estimated based on radar.
Public report.
Measured on a personal weather station. Time estimated by radar.
Measured on a mesonet station.
Many snapped tree branches in the city, and a 40 foot tall tree snapped and blocking the roadway. The health of the tree was unknown.
Report of a fence blown over.
Tree limb 8 inches in diameter blown down.
Several large tree limbs down. Time estimated by radar.
Tree limb about 12 inches in diameter blown down.
Report from NWS employee.
Report of a large limb down on a driveway. Time estimated by radar.
Measured at kfoe asos at Forbes Field.
Measured at the kcnk asos at Blosser Field.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2021Every state in 2021This day in weather historyWarnings in Kansas, July 2021
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 972075, 972076, 972077, 972078, 972079, 972080, 972081, 972082, 972083, 972084, 972085, 972086, 972087.