Alert archive / Kansas / Areal Flood Warnings in 2021

Areal Flood Warning 6, NWS Topeka, KS

May 17, 2021Franklin County, Kansas

NWS Topeka, KS issued this areal flood warning at May 17, 2021, 12:45 PM CDT for Franklin County, Kansas. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 17, 2021, 12:45 PM CDT (17:45 UTC)
Expired: May 17, 2021, 8:00 PM CDT
In force: 7 hr
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Flood severity: None

County Franklin County, KS

The radar

The Pleasant Hill radar (KEAX), 93 km from the middle of the area, began a volume at 17:46 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 5.8 hours before the alert went out and 227 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 42 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 558 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 240 m²/s²
0-3 km storm-relative helicity: 246 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, 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 this areal flood warning went out at May 17, 12:38 PM CDT, 7 minutes earlier.

Area forecast discussion, May 17, 12:38 PM CDT, 7 minutes before

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Hazardous weather outlook, May 17, 4:25 AM CDT, 8 hours 20 minutes before

Hazardous Weather Outlook
National Weather Service Topeka KS
425 AM CDT Mon May 17 2021

KSZ008>012-020>024-026-034>040-054>056-058-059-180930-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
425 AM CDT Mon May 17 2021

This hazardous weather outlook is for east central...north
central and northeast Kansas.

.DAY ONE...Today and Tonight.

Areal flooding and river flooding continues across portions of
east-central Kansas this morning. Scattered weak thunderstorms
may develop again this afternoon, however severe weather is not
expected.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Showers and thunderstorms will redevelop Tuesday afternoon. A few
strong to severe storms may be possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed through tonight.

&&

More detailed information can be accessed at...
http://www.weather.gov/top/sitrep

In the hours before

Local storm report, May 17, 9:56 AM CDT, 2 hours 49 minutes before

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Local storm report, May 17, 10:51 AM CDT, 1 hour 54 minutes before

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Local storm report, May 17, 10:52 AM CDT, 1 hour 53 minutes before

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Local storm report, May 17, 10:53 AM CDT, 1 hour 52 minutes before

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Local storm report, May 17, 10:54 AM CDT, 1 hour 51 minutes before

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Local storm report, May 17, 10:55 AM CDT, 1 hour 50 minutes before

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The office that day

Everything else NWS Topeka, KS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 7:45 PM CDT	Areal Flood Warning	TOP	Anderson, Coffey, Franklin, Osage	4 hr
May 16, 8:01 PM CDT	River Flood Warning	TOP	Lyon	40 hr
May 16, 8:01 PM CDT	River Flood Warning	TOP	Lyon	31 hr
May 16, 8:01 PM CDT	River Flood Warning	TOP	Lyon	41 hr
May 16, 11:49 PM CDT	Areal Flood Warning	TOP	Anderson, Coffey, Franklin, Lyon, Osage, Wabaunsee	13 hr
May 17, 6:40 AM CDT	Areal Flood Warning	TOP	Morris	6 hr

Nearby

Areal Flood Warnings in Kansas, 2021 Every areal flood warning in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.