A small line of storms moved across Brown County between 4pm and 5pm on Monday October 8th. A brief weak tornado appears to have occurred a few miles WNW of Hiawatha.
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.
A small line of storms moved across Brown County between 4pm and 5pm on Monday October 8th. A brief weak tornado appears to have occurred a few miles WNW of Hiawatha. No other damage occurred due to storms that day. In addition several flash-flooding reports were received from portions of Anderson County.
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 Oct 8, 6:17 AM CST, 3 hours 43 minutes earlier.
Area Forecast Discussion National Weather Service Topeka KS 717 AM CDT Mon Oct 8 2018 ...Update to aviation forecast discussion... .SHORT TERM...(Today and tonight) Issued at 340 AM CDT Mon Oct 8 2018 Early this morning, ongoing showers and storms continue to overspread the area with the heaviest precipitation over east central Kansas and far northeast Kansas. Some training of storms around Nemaha, Brown, and northern Jackson County brought 2+ inches and have opted to add these counties into the Flood Watch as heavy rain may occur again in that area with the northward lifting surface boundary. The aforementioned boundary is progged to lift north into north central Kansas by late morning, orientated relatively north-northeast to south-southwest. This will act to refocus precipitation back into north central Kansas this afternoon and evening. Modest destabilization this afternoon will allow for at least somewhat of a threat for some strong to severe storms to form. While lapse rates are lacking, adequate deep layer shear will allow for a threat of mainly strong winds. With the boundary in place and 0-1km shear near 20 knots, a spin up is also not out of the question. Southerly 850mb winds will continue to advect a large swath of moisture into the area making heavy rains and flooding a concern again for today through Tuesday night. Another 1-3 inches will be possible through the day and overnight tonight in north central Kansas. With persistent cloud cover and warm air advection today, there will be a gradient of high temperatures in the upper 60s in north central Kansas to the low 80s in east central Kansas. For tonight, the surface front is slow to progress eastward keeping prolonged rains over north central Kansas before finally making a push east Tuesday afternoon. The NAM is the most robust with QPF tonight while some CAMS back off on precipition slightly after midnight. Multiple rivers and creeks are forecast to flood in this area tonight based on rainfall totals so this will be something to watch with rainfall today and tonight. Cloud cover will moderate low temperatures tonight with lows only in the 50s behind the front, and in the upper 60s ahead of it. .LONG TERM...(Tuesday through Sunday) Issued at 340 AM CDT Mon Oct 8 2018 A deep mid-level, open wave trough will be located across the Four Corners region of the Central Great Basin by Tuesday morning. A surface front extending from the Great Lakes region down into western Texas will be located across central Kansas during this time. Showers and thunderstorms will likely be ongoing in the morning hours in north central Kansas, eventually shifting eastward as the front progresses through the afternoon and evening hours. PWATs between 1.5 to 2 inches will allow for more heavy rainfall across an already nearly saturated northeast Kansas. The heaviest rainfall is expected with the morning activity in north central Kansas. Afternoon activity will primarily be located east of a Washington to Junction City line with storms oriented north to south as the front progresses across the area. QPF amounts look to be around an inch or less with this final push of the front. With the heaviest rainfall Monday and Tuesday morning west of this activity Tuesday afternoon, have opted to continue to keep parts of eastern Kansas and east central Kansas out of the Flood Watch. As for storms Tuesday afternoon and evening, sufficient instability and deep shear of 35-40 knots may allow for some stronger storms to form with damaging winds being the main hazard, although low level shear does indicate there could be rotating updrafts. High pressure centered over the northern Plains noses into the area Wednesday and Thursday with clearing skies and dry conditions expected. Temperatures will drop behind the front with highs these days in the upper 50s and low 60s. Models struggle in the extended period with the ingestion of a tropical system near the Baja Peninsula into the mean flow. Kept some PoPs for the ladder half of the week into the weekend, but confidence in precipitation is low at this time. && .AVIATION...(For the 12Z TAFS through 12Z Tuesday morning) Issued at 717 AM CDT Mon Oct 8 2018 MVFR to IFR cigs give way to vfr cigs when heavier rains move over the terminals. Expect this trend to continue with the shra and tsra. VSBYS vary from vfr to mvfr to ifr. Expect an improvement to vfr for both cigs and vsbys at TOP and FOE after 18Z and at MHK near 21Z. Line of convection moves toward MHK after 23Z and added vcts for now. LLWS forecast at TOP and FOE after 05Z. && .TOP WATCHES/WARNINGS/ADVISORIES... Flood Watch through Wednesday morning for KSZ008>012-020>024-034>038-054. && SHORT TERM...Heller LONG TERM...Heller AVIATION...53
Hazardous Weather Outlook National Weather Service Topeka KS 349 AM CDT Mon Oct 8 2018 KSZ008>012-020>024-026-034>040-054>056-058-059-090900- Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley- Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris- Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson- 349 AM CDT Mon Oct 8 2018 This hazardous weather outlook is for east central...north central and northeast Kansas. .DAY ONE...Today and Tonight. Showers and thunderstorms will occur across much of the area this morning through tonight. Locally heavy rains will occur in some areas as the storms are expected to move over the same areas repeatedly. This could cause localized flooding. This afternoon, there is also a small chance that a few storms could produce strong to severe gusty winds into early this evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Multiple rounds of showers and thunderstorms are expected to occur through tomorrow night. Areas of heavy rainfall are expected across much of north central and central Kansas, causing an increasing threat of flooding. A few strong to severe thunderstorms also will be possible during the afternoon and evening hours of Tuesday mainly east of a Seneca to Manhattan to Junction City line. While there is still some uncertainty regarding the potential for severe weather, a risk for damaging wind gusts may accompany the most intense storms. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed through tonight. && More detailed information can be accessed at... http://www.weather.gov/top/sitrep
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html><!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1002 AM CDT MON OCT 8 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 AM HEAVY RAIN 4 SW DUNLAP 38.53N 96.42W
10/08/2018 M3.20 INCH MORRIS KS BROADCAST MEDIA
STORM TOTAL FROM SATURDAY THROUGH MONDAY
MORNING.
&&
STPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
1006 AM CDT MON OCT 8 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0900 AM HEAVY RAIN OLPE 38.26N 96.17W
10/08/2018 M2.40 INCH LYON KS BROADCAST MEDIA
STORM TOTAL FROM SATURDAY THROUGH MONDAY
MORNING.
&&
STThe Topeka radar (KTWX), 113 km away, was scanning. The volume nearest the first event began at 15:58 UTC.
4 flash flood, 1 tornado. Local standard time, as filed.
A roadway was closed due to flash-flooding.
Road closed at 1600 Road and Indiana Road due to flooding.
Road closed due to flooding. 1750 Road between Osage and Texas Road.
A water rescue was underway as a vehicle was swept off the road.
A small brief tornado developed along a line of storms. It tracked northeast and damaged one known farmstead. Start and end points and time is estimated based on tornado damage signature dual-pol radar data and damage report. Estimated path of 3-4 miles.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Kansas in 2018Every state in 2018This day in weather historyThe tornado archive for Kansas, 2018Warnings in Kansas, October 2018
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: 790561, 790562, 790563, 790564, 778619.