Alert archive / Kansas / Special Weather Statements in 2020

Special Weather Statement, NWS Topeka, KS

August 8, 2020Franklin County, Kansas

NWS Topeka, KS issued this special weather statement at Aug 8, 2020, 4:15 AM CDT for Franklin County, Kansas. It was in force for 15 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 8, 2020, 4:15 AM CDT (09:15 UTC)
Expired: Aug 8, 2020, 4:30 AM CDT
In force: 15 min
Issued by: NWS Topeka, KS

County Franklin County, KS

The radar

The Pleasant Hill radar (KEAX), 88 km from the middle of the area, began a volume at 09:16 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

Topeka, KS (KTOP), launched 00:00Z, 9.3 hours before the alert went out and 81 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: 925 J/kg
Mixed-layer CIN: -174 J/kg
Mixed-layer LCL: 1718 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 133 m²/s²
0-3 km storm-relative helicity: 274 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 11.9

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 8, 4:09 AM CDT, 6 minutes earlier.

Area forecast discussion, Aug 8, 4:09 AM CDT, 6 minutes before

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Hazardous weather outlook, Aug 8, 4:15 AM CDT, 0 minutes before

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In the hours before

Special weather statement, Aug 8, 12:32 AM CDT, 3 hours 43 minutes before

Special Weather Statement
National Weather Service Topeka KS
1232 AM CDT Sat Aug 8 2020

KSZ038-055-080615-
Wabaunsee-Osage-
1232 AM CDT Sat Aug 8 2020

...SPECIAL WEATHER STATEMENT FOR SOUTHEASTERN WABAUNSEE AND
NORTHWESTERN OSAGE COUNTIES...

At 1232 AM CDT, Doppler radar was tracking a strong thunderstorm near
Harveyville, moving east at 20 mph.

Half inch hail will be possible with this storm.

Locations impacted include...
Carbondale, Scranton and Harveyville.

This includes Kansas Turnpike between mile markers 158 and 165.

LAT...LON 3875 9565 3878 9600 3887 9599 3886 9563
TIME...MOT...LOC 0532Z 272DEG 18KT 3881 9592

Reese/Baerg

Special weather statement, Aug 8, 1:25 AM CDT, 2 hours 50 minutes before

Special Weather Statement
National Weather Service Topeka KS
125 AM CDT Sat Aug 8 2020

KSZ054-055-058-080715-
Coffey-Lyon-Osage-
125 AM CDT Sat Aug 8 2020

...SPECIAL WEATHER STATEMENT FOR SOUTHERN OSAGE...NORTHWESTERN COFFEY
AND SOUTHEASTERN LYON COUNTIES...

At 124 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Reading to near Neosho Rapids. Movement
was east at 20 mph.

Half inch hail will be possible with these storms.

Locations impacted include...
Lebo, Hartford, Neosho Rapids, Reading, Olivet, Beto Junction and
Melvern Lake.

This includes Interstate 35 between mile markers 140 and 158.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3861 9560 3833 9572 3828 9607 3857 9594
TIME...MOT...LOC 0624Z 256DEG 19KT 3853 9591 3834 9601

Reese/Baerg

Special weather statement, Aug 8, 1:37 AM CDT, 2 hours 38 minutes before

Special Weather Statement
National Weather Service Topeka KS
137 AM CDT Sat Aug 8 2020

KSZ040-080700-
Douglas-
137 AM CDT Sat Aug 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN DOUGLAS COUNTY UNTIL
200 AM CDT...

At 137 AM CDT, Doppler radar was tracking a strong thunderstorm over
southeastern Lawrence, moving east at 20 mph.

Penny size hail will be possible with this storm.

Locations impacted include...
Lawrence and Eudora.

This includes Kansas Turnpike between mile markers 200 and 205.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3887 9506 3888 9531 3901 9530 3900 9519
      3897 9519 3896 9518 3896 9517 3898 9516
      3897 9513 3897 9511 3895 9509 3896 9508
      3898 9508 3899 9506
TIME...MOT...LOC 0637Z 273DEG 18KT 3894 9525

Reese/Baerg

Special weather statement, Aug 8, 1:59 AM CDT, 2 hours 16 minutes before

Special Weather Statement
National Weather Service Topeka KS
159 AM CDT Sat Aug 8 2020

KSZ058-080730-
Coffey-
159 AM CDT Sat Aug 8 2020

...SPECIAL WEATHER STATEMENT FOR CENTRAL COFFEY COUNTY...

At 159 AM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from 6 miles northwest of New Strawn to 4 miles
north of Gridley. Movement was east at 20 mph.

Half inch hail will be possible with these storms.

Locations impacted include...
Burlington, Waverly, New Strawn, Gridley and John Redmond Reservoir.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 3810 9596 3821 9596 3841 9584 3841 9556
      3808 9570
TIME...MOT...LOC 0659Z 276DEG 19KT 3834 9579 3817 9590

Reese/Baerg

Special weather statement, Aug 8, 4:01 AM CDT, 14 minutes before

Special Weather Statement
National Weather Service Topeka KS
401 AM CDT Sat Aug 8 2020

KSZ056-059-080915-
Franklin-Anderson-
401 AM CDT Sat Aug 8 2020

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN FRANKLIN AND
NORTHEASTERN ANDERSON COUNTIES UNTIL 415 AM CDT...

At 400 AM CDT, Doppler radar was tracking a strong thunderstorm near
Lane, moving east at 20 mph.

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

Locations impacted include...
Greeley and Lane.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with this storm, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 3838 9525 3847 9522 3848 9507 3832 9507
TIME...MOT...LOC 0900Z 282DEG 19KT 3842 9513

Baerg

Special weather statement, Aug 8, 4:15 AM CDT, 0 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
Aug 8, 12:16 AM CDT	Special Weather Statement	TOP	Douglas	59 min
Aug 8, 12:23 AM CDT	Special Weather Statement	TOP	Osage	52 min
Aug 8, 12:32 AM CDT	Special Weather Statement	TOP	Osage	43 min
Aug 8, 1:25 AM CDT	Special Weather Statement	TOP	Coffey	50 min
Aug 8, 1:37 AM CDT	Special Weather Statement	TOP	Douglas	23 min
Aug 8, 1:59 AM CDT	Special Weather Statement	TOP	Coffey	31 min
Aug 8, 4:01 AM CDT	Special Weather Statement	TOP	Franklin	14 min

Nearby

Special Weather Statements in Kansas, 2020 Every special weather statement 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.