Alert archive / Kansas / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 100, NWS Topeka, KS

June 9, 2020Marshall County, Nemaha County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jun 9, 2020, 6:58 PM CDT for Marshall County, Nemaha County, Kansas. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 9, 2020, 6:58 PM CDT (23:58 UTC)
Expired: Jun 9, 2020, 7:15 PM CDT
In force: 17 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Marshall County, KS, Nemaha County, KS

The radar

The Topeka radar (KTWX), 88 km from the middle of the area, began a volume at 00:01 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 9, 2:36 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 12.0 hours before the alert went out and 103 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: 554 J/kg
Mixed-layer CIN: -237 J/kg
Mixed-layer LCL: 924 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 41 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 severe thunderstorm 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 severe thunderstorm warning went out at Jun 9, 6:49 PM CDT, 9 minutes earlier.

Area forecast discussion, Jun 9, 6:49 PM CDT, 9 minutes before

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Hazardous weather outlook, Jun 9, 3:57 PM CDT, 3 hours 1 minute before

Hazardous Weather Outlook
National Weather Service Topeka KS
357 PM CDT Tue Jun 9 2020

KSZ008>012-020>024-026-034>040-054>056-058-059-102100-
Republic-Washington-Marshall-Nemaha-Brown-Cloud-Clay-Riley-
Pottawatomie-Jackson-Jefferson-Ottawa-Dickinson-Geary-Morris-
Wabaunsee-Shawnee-Douglas-Lyon-Osage-Franklin-Coffey-Anderson-
357 PM CDT Tue Jun 9 2020

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

.DAY ONE...This Afternoon and tonight.

Severe thunderstorms are possible this afternoon and into the
early evening for areas along and north of a line from Herington
to Ottawa. Storms could develop along a northward moving front
around 3 pm along the Herington to Ottawa line. Then storms would
continue moving north potentially exiting northeast KS by around
9pm. These storms will be capable of producing tornadoes, large
hail, and damaging winds.

Very strong northwest winds are forecast to develop overnight and
into Wednesday morning with gusts potentially between 40 and 60
mph. Take actions now to secure outdoor objects that could be
thrown around in the wind. These winds could also cause power
outages, so think about having devices charged ahead of time.
High wind warnings and wind advisories go into effect this
evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotters across north central and northeast Kansas should be ready
to activate this afternoon/evening.

&&

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

In the hours before

Special weather statement, Jun 9, 5:13 PM CDT, 1 hour 45 minutes before

Special Weather Statement
National Weather Service Topeka KS
513 PM CDT Tue Jun 9 2020

KSZ010-022-092245-
Riley-Marshall-
513 PM CDT Tue Jun 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN RILEY AND
SOUTHWESTERN MARSHALL COUNTIES UNTIL 545 PM CDT...

At 513 PM CDT, Doppler radar was tracking a strong thunderstorm near
Randolph, moving north at 20 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Randolph.

A Tornado Watch remains in effect until 1000 PM CDT for north central
and northeastern Kansas.

LAT...LON 3961 9659 3946 9670 3946 9671 3945 9672
      3943 9672 3940 9684 3957 9688 3957 9681
      3960 9681
TIME...MOT...LOC 2213Z 166DEG 19KT 3945 9679

Teefey

Special weather statement, Jun 9, 5:15 PM CDT, 1 hour 43 minutes before

Special Weather Statement
National Weather Service Topeka KS
515 PM CDT Tue Jun 9 2020

KSZ023-092245-
Pottawatomie-
515 PM CDT Tue Jun 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN POTTAWATOMIE COUNTY
UNTIL 545 PM CDT...

At 515 PM CDT, Doppler radar was tracking a strong thunderstorm near
Olsburg, moving north at 20 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Blaine and Olsburg.

A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Kansas.

LAT...LON 3941 9642 3939 9664 3944 9671 3948 9668
      3947 9668 3948 9667 3950 9666 3951 9664
      3952 9664 3953 9663 3954 9660 3956 9658
      3956 9631
TIME...MOT...LOC 2215Z 166DEG 19KT 3943 9656

Teefey

Local storm report, Jun 9, 6:16 PM CDT, 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TOPEKA KS
616 PM CDT TUE JUN 9 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0610 PM     TSTM WND GST     FRANKFORT               39.70N 96.42W
06/09/2020  E60 MPH          MARSHALL           KS   EMERGENCY MNGR

            NUMEROUS TREE LIMBS WERE REPORTED DOWN
            WITHIN THE CITY, BUT THE SIZES WERE UNKNOWN.

&&

BAERG

Special weather statement, Jun 9, 6:16 PM CDT, 42 minutes before

Special Weather Statement
National Weather Service Topeka KS
616 PM CDT Tue Jun 9 2020

KSZ010-092345-
Marshall-
616 PM CDT Tue Jun 9 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL MARSHALL COUNTY
UNTIL 645 PM CDT...

At 616 PM CDT, Doppler radar was tracking a strong thunderstorm 4
miles west of Beattie, moving north at 30 mph.

Penny size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Marysville, Beattie, Summerfield and Oketo.

A Tornado Watch remains in effect until 1000 PM CDT for northeastern
Kansas.

LAT...LON 3978 9644 3980 9663 4000 9659 4000 9633
TIME...MOT...LOC 2316Z 192DEG 25KT 3985 9650

Teefey

Local storm report, Jun 9, 6:32 PM CDT, 26 minutes before

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Local storm report, Jun 9, 6:39 PM CDT, 19 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
Jun 9, 3:31 AM CDT	High Wind Warning	TOP	Clay, Cloud, Dickinson, Geary, Marshall, Morris and 4 more	24 hr
Jun 9, 3:31 AM CDT	Wind Advisory	TOP	Anderson, Brown, Clay, Cloud, Coffey, Dickinson and 17 more	32 hr
Jun 9, 4:41 PM CDT	Special Weather Statement	TOP	Republic	34 min
Jun 9, 4:51 PM CDT	Severe Thunderstorm Warning	TOP	Republic	24 min
Jun 9, 5:11 PM CDT	Severe Thunderstorm Warning	TOP	Republic	34 min
Jun 9, 5:13 PM CDT	Special Weather Statement	TOP	Riley	32 min
Jun 9, 5:15 PM CDT	Special Weather Statement	TOP	Pottawatomie	30 min
Jun 9, 5:28 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Pottawatomie, Riley	32 min
Jun 9, 5:31 PM CDT	Severe Thunderstorm Warning	TOP	Republic	14 min
Jun 9, 5:47 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Nemaha	43 min
Jun 9, 6:16 PM CDT	Special Weather Statement	TOP	Marshall	29 min
Jun 9, 6:26 PM CDT	Tornado Warning	TOP	Marshall, Nemaha	34 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2020 Every severe thunderstorm warning in 2020

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.