Alert archive / Kansas / Tornado Warnings in 2018

Tornado Warning 11, NWS Topeka, KS

May 1, 2018Cloud County, Ottawa County, Kansas

NWS Topeka, KS issued this tornado warning at May 1, 2018, 8:26 PM CDT for Cloud County, Ottawa County, Kansas. It was in force for 34 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 1, 2018, 8:26 PM CDT (01:26 UTC)
Expired: May 1, 2018, 9:00 PM CDT
In force: 34 min
Issued by: NWS Topeka, KS
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Cloud County, KS, Ottawa County, KS

The radar

The Topeka radar (KTWX), 134 km from the middle of the area, began a volume at 01:25 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.

What was reported inside it

Time	Report	Where	Remark
May 1, 8:30 PM CDT	HAIL 4	Ada, KS	WIND DRIVEN AT TIMES. EXTENSIVE DAMAGE TO SIDING AND WINDOWS TO SEVERAL HOMES IN ADA.
May 1, 8:40 PM CDT	HAIL 1.75	4 Ene Ada, KS
May 1, 8:50 PM CDT	TSTM WND GST 63	3 Ese Minneapolis, KS

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 1, 2:47 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Topeka, KS (KFOE), launched 00:00Z, 1.4 hours before the alert went out and 184 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: 543 J/kg
Mixed-layer CIN: -73 J/kg
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 213 m²/s²
0-3 km storm-relative helicity: 334 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 11.0

Open this sounding in Storm Lab

The text

As transmitted.

063 
WFUS53 KTOP 020126 RRA
TORTOP
KSC029-143-020200-
/O.NEW.KTOP.TO.W.0011.180502T0126Z-180502T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Topeka KS
826 PM CDT TUE MAY 1 2018

The National Weather Service in Topeka has issued a

* Tornado Warning for...
  Northern Ottawa County in north central Kansas...
  South central Cloud County in north central Kansas...

* Until 900 PM CDT
    
* At 825 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Ada, moving east at 40 mph.

  HAZARD...Tornado and golf ball size hail. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Minneapolis around 840 PM CDT. 
  Delphos around 845 PM CDT. 
  Wells around 855 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3924 9793 3937 9754 3914 9746 3906 9793
TIME...MOT...LOC 0125Z 249DEG 35KT 3912 9791 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

Baerg

2 follow-up statements

771 
WWUS53 KTOP 020137
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
837 PM CDT TUE MAY 1 2018

KSC029-143-020200-
/O.CON.KTOP.TO.W.0011.000000T0000Z-180502T0200Z/
Ottawa-Cloud-
837 PM CDT TUE MAY 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR NORTHERN
OTTAWA AND SOUTH CENTRAL CLOUD COUNTIES...
    
At 837 PM CDT, a severe thunderstorm capable of producing a tornado
was located 4 miles west of Minneapolis, moving east at 40 mph.

HAZARD...Tornado and softball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Wells around 855 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

&&

LAT...LON 3924 9793 3937 9754 3914 9746 3906 9793
TIME...MOT...LOC 0137Z 250DEG 34KT 3913 9778 

TORNADO...RADAR INDICATED
HAIL...4.00IN

$$

Baerg

926 
WWUS53 KTOP 020145
SVSTOP

Severe Weather Statement
National Weather Service Topeka KS
845 PM CDT TUE MAY 1 2018

KSC029-143-020200-
/O.CON.KTOP.TO.W.0011.000000T0000Z-180502T0200Z/
Ottawa-Cloud-
845 PM CDT TUE MAY 1 2018

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 PM CDT FOR NORTHERN
OTTAWA AND SOUTH CENTRAL CLOUD COUNTIES...
    
At 845 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Minneapolis, moving east at 30 mph.

HAZARD...Tornado and softball size hail. 

SOURCE...Radar indicated rotation. 

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely. 

This dangerous storm will be near...
  Wells around 900 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 3924 9793 3937 9754 3914 9746 3906 9793
TIME...MOT...LOC 0145Z 257DEG 26KT 3913 9772 

TORNADO...RADAR INDICATED
HAIL...4.00IN

$$

Skow

The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 7:00 PM CDT	Severe Thunderstorm Warning	TOP	Cloud	30 min
May 1, 7:24 PM CDT	Tornado Warning Tornado observed	TOP	Clay, Cloud, Republic, Washington	36 min
May 1, 7:26 PM CDT	Tornado Warning	TOP	Ottawa	34 min
May 1, 7:52 PM CDT	Tornado Warning	TOP	Clay, Riley, Washington	38 min
May 1, 7:54 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	TOP	Ottawa	36 min
May 1, 8:01 PM CDT	Tornado Warning Considerable damage threat	TOP	Clay, Riley, Washington	34 min
May 1, 8:19 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	41 min
May 1, 8:26 PM CDT	Tornado Warning	TOP	Clay, Dickinson, Ottawa	34 min
May 1, 8:33 PM CDT	Severe Thunderstorm Warning	TOP	Marshall, Riley, Washington	57 min
May 1, 8:58 PM CDT	Tornado Warning Tornado observed	TOP	Clay	32 min
May 1, 9:00 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	45 min
May 1, 9:13 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Dickinson	47 min
May 1, 9:25 PM CDT	Tornado Warning Tornado observed	TOP	Clay, Riley	35 min
May 1, 9:27 PM CDT	Severe Thunderstorm Warning	TOP	Clay	33 min
May 1, 9:41 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud, Ottawa	34 min
May 1, 9:47 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Geary, Pottawatomie, Riley	43 min
May 1, 9:54 PM CDT	Tornado Warning	TOP	Pottawatomie, Riley	36 min
May 1, 10:11 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Cloud, Ottawa	34 min
May 1, 10:15 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Riley, Wabaunsee	45 min
May 1, 10:19 PM CDT	Areal Flood Advisory	TOP	Clay, Cloud, Ottawa	3 hr
May 1, 10:24 PM CDT	Severe Thunderstorm Warning	TOP	Cloud, Ottawa	36 min
May 1, 10:27 PM CDT	Tornado Warning	TOP	Marshall, Nemaha, Pottawatomie	33 min
May 1, 10:40 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Geary, Pottawatomie, Riley	35 min
May 1, 10:55 PM CDT	Special Weather Statement	TOP	Jackson	35 min
May 1, 11:08 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Riley	37 min
May 1, 11:35 PM CDT	Severe Thunderstorm Warning	TOP	Jackson, Pottawatomie	25 min
May 1, 11:49 PM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie, Riley	26 min
May 2, 12:11 AM CDT	Severe Thunderstorm Warning	TOP	Pottawatomie	34 min
May 2, 12:44 AM CDT	Special Weather Statement	TOP	Jackson	31 min
May 2, 1:15 AM CDT	Special Weather Statement	TOP	Marshall	30 min
May 2, 1:20 AM CDT	Special Weather Statement	TOP	Jefferson	40 min
May 2, 3:36 AM CDT	Flash Flood Watch	TOP	Anderson, Clay, Cloud, Coffey, Dickinson, Douglas and 12 more	18 hr
May 2, 3:18 PM CDT	Special Weather Statement	TOP	Ottawa	12 min
May 2, 3:34 PM CDT	Special Weather Statement	TOP	Ottawa	11 min
May 2, 3:41 PM CDT	Severe Thunderstorm Warning	TOP	Ottawa	64 min
May 2, 3:52 PM CDT	Tornado Warning	TOP	Ottawa	38 min
May 2, 4:08 PM CDT	Severe Thunderstorm Warning	TOP	Cloud	52 min
May 2, 4:11 PM CDT	Tornado Warning	TOP	Cloud	49 min
May 2, 4:13 PM CDT	Tornado Warning	TOP	Ottawa	47 min
May 2, 4:21 PM CDT	Tornado Warning	TOP	Ottawa	39 min
May 2, 4:29 PM CDT	Tornado Warning	TOP	Clay, Cloud, Washington	46 min
May 2, 4:34 PM CDT	Areal Flood Advisory	TOP	Cloud, Ottawa	3 hr
May 2, 4:40 PM CDT	Severe Thunderstorm Warning	TOP	Clay, Dickinson, Ottawa	65 min
May 2, 4:47 PM CDT	Special Weather Statement	TOP	Dickinson	43 min
May 2, 4:48 PM CDT	Severe Thunderstorm Warning	TOP	Clay	57 min
May 2, 4:58 PM CDT	Tornado Warning	TOP	Clay, Marshall, Riley, Washington	47 min
May 2, 5:08 PM CDT	Severe Thunderstorm Warning	TOP	Geary, Pottawatomie, Riley	67 min
May 2, 5:22 PM CDT	Special Weather Statement	TOP	Geary, Morris	53 min
May 2, 5:34 PM CDT	Tornado Warning	TOP	Marshall, Pottawatomie, Riley	41 min
May 2, 6:03 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Jackson, Marshall, Nemaha, Pottawatomie	57 min
May 2, 6:08 PM CDT	Special Weather Statement	TOP	Shawnee, Wabaunsee	52 min
May 2, 6:41 PM CDT	Severe Thunderstorm Warning	TOP	Brown, Jackson, Jefferson	64 min
May 2, 6:45 PM CDT	Special Weather Statement	TOP	Morris	30 min

Nearby

Tornado Warnings in Kansas, 2018 Every tornado warning in 2018 Tornadoes in 2018

Sources

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