Alert archive / Kansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 88, NWS Kansas City, MO

May 30, 2017Miami County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at May 30, 2017, 6:57 PM CDT for Miami County, Kansas. It was in force for 33 min. 1 report 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 30, 2017, 6:57 PM CDT (23:57 UTC)
Expired: May 30, 2017, 7:30 PM CDT
In force: 33 min
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Miami County, KS

The radar

The Pleasant Hill radar (KEAX), 56 km from the middle of the area, began a volume at 23:57 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 30, 6:57 PM CDT	HAIL 1	1 Wsw Paola, KS	MIAMI COUNTY SHERIFF'S DEPT REPORTED QUARTER SIZE HAIL.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this severe thunderstorm warning; the first came 0 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Topeka, KS (KFOE), launched 12:00Z, 12.0 hours before the alert went out and 92 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2308 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 36 m²/s²
0-3 km storm-relative helicity: 163 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

271 
WUUS53 KEAX 302357
SVREAX
KSC121-310030-
/O.NEW.KEAX.SV.W.0088.170530T2357Z-170531T0030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Kansas City/Pleasant Hill MO
657 PM CDT TUE MAY 30 2017

The National Weather Service in Pleasant Hill has issued a

* Severe Thunderstorm Warning for...
  Southeastern Miami County in east central Kansas...

* Until 730 PM CDT

* At 657 PM CDT, a severe thunderstorm was located over Paola, moving
  southeast at 30 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Paola, Drexel and New Lancaster. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3856 9492 3861 9488 3853 9461 3839 9461
      3839 9475
TIME...MOT...LOC 2357Z 305DEG 27KT 3854 9486 

HAIL...1.00IN
WIND...60MPH
 
$$

CDB

1 follow-up statement

564 
WWUS53 KEAX 310016
SVSEAX

Severe Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
716 PM CDT TUE MAY 30 2017

KSC121-310030-
/O.CON.KEAX.SV.W.0088.000000T0000Z-170531T0030Z/
Miami KS-
716 PM CDT TUE MAY 30 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM CDT
FOR SOUTHEASTERN MIAMI COUNTY...

At 716 PM CDT, a severe thunderstorm was located near Drexel, or 8
miles northeast of La Cygne, moving southeast at 30 mph.

HAZARD...60 mph wind gusts and quarter size hail. 

SOURCE...Radar indicated. 

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees. 

Locations impacted include...
Drexel and New Lancaster. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3847 9479 3855 9472 3853 9461 3839 9461
      3839 9475
TIME...MOT...LOC 0016Z 304DEG 27KT 3846 9470 

HAIL...1.00IN
WIND...60MPH
 
$$

CDB

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 Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 6:46 PM CDT, 11 minutes earlier.

Area forecast discussion, May 30, 6:46 PM CDT, 11 minutes before

AREA FORECAST DISCUSSION
National Weather Service Kansas City/Pleasant Hill MO
646 PM CDT Tue May 30 2017

.Discussion...
Issued at 231 PM CDT TUE MAY 30 2017

Currently watching an area of congested cumulus trying to develop
near Topeka, which appears to be forming at the leading edge of a
moist tongue coming out of central KS. It's possible that a few
showers or storms could develop out of this activity and spread
into western MO over the next few hours, but a relatively dry
low-level airmass should keep instability rather low (1000 J/kg or
less) and cloud bases high. This should cut back on the potential
for organized strong storms, although deep layer shear values
around 40 to 50 kts could support some strong updrafts capable of
gusty downburst winds and perhaps some small hail. The potential
for these gusts to exceed 50 mph appears pretty low given the weak
instability.

A weak frontal boundary entering northern MO will stall near the
Missouri River tonight and move just slightly back north on
Wednesday. This feature will likely set the stage for more
organized thunderstorm development tomorrow evening as a weak
impulse moves in from the west. If storms move in early enough
while the airmass is still diurnally unstable, the combo of modest
instability and shear and the presence of the low level boundary
could support a few strong or severe storms with large hail and
damaging winds into Wednesday night, mainly along and just south
of the boundary which will be roughly from St. Joseph to Moberly.

Weak ridging will build in Thursday and will bring an end to
precipitation chances at least temporarily Thursday and Thursday
night. However a quick transition to quasi-zonal upper flow will
bring thunderstorm chances back to the region Friday and Friday
night, and last off-and-on into early next week. Most of these
rain chances will be instability driven in a weakly forced late
spring/early summer environment, so as of now there are no strong
signals of organized severe storms or heavy rain during this
period.

&&

.Aviation...(For the 00Z TAFS through 00Z Wednesday Evening)
Issued at 645 PM CDT TUE MAY 30 2017

Ongoing storms across southern portions of the KC Metro will begin
to wave off over the next few hrs with loss of instability. Before
this occurs, IXD stands the best chance of seeing impacts with
temporary MVFR and IFR conditions possible. Elsewhere, VFR
conditions to dominate through much of the fcst period with the
next chance for shwrs/storms arriving late tomorrow afternoon.

&&

.EAX WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
MO...NONE.
&&

Discussion...Hawblitzel
Aviation...32

Hazardous weather outlook, May 30, 4:50 AM CDT, 14 hours 7 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
450 AM CDT Tue May 30 2017

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-311000-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
450 AM CDT Tue May 30 2017

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 Strong to isolated severe storms are possible this afternoon and
 evening, mainly across a line extending from eastern Kansas to
 central and southern Missouri. Activity will be spotty and brief,
 though strong winds and large hail are possible within any storms
 which may develop.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

 Additional strong storms are possible Wednesday afternoon across
 eastern Kansas and west central Missouri. Hazards will include once
 again the potential for strong winds and isolated large hail. The
 active pattern will persist into the late week with multiple rounds
 of showers and thunderstorms expected.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

In the hours before

Local storm report, May 30, 6:42 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
642 PM CDT TUE MAY 30 2017

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

0639 PM     HAIL             SPRING HILL             38.75N 94.83W
05/30/2017  E1.00 INCH       JOHNSON            KS   PUBLIC

            NICKEL TO QUARTER SIZE HAIL REPORTED AT
            CASEY'S GENERAL STORE.

&&

LG

Local storm report, May 30, 6:47 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
647 PM CDT TUE MAY 30 2017

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

0644 PM     HAIL             SPRING HILL             38.74N 94.82W
05/30/2017  E0.75 INCH       JOHNSON            KS   PUBLIC

            PENNY SIZE HAIL LITTERING THE GROUND IN
            SPRING HILL. REPORTED VIA TWITTER.

&&

LG

Local storm report, May 30, 6:52 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
652 PM CDT TUE MAY 30 2017

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

0637 PM     HAIL             SPRING HILL             38.74N 94.82W
05/30/2017  E0.75 INCH       JOHNSON            KS   TRAINED SPOTTER

            PENNY SIZE HAIL LITTERING THE GROUND 3 NE OF
            SPRING HILL.

&&

LG

Special weather statement, May 30, 6:52 PM CDT, 5 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
652 PM CDT TUE MAY 30 2017

KSZ057-310015-
Miami KS-
652 PM CDT TUE MAY 30 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN MIAMI COUNTY UNTIL
715 PM CDT...

At 652 PM CDT, Doppler radar was tracking a strong thunderstorm over
Paola, moving southeast at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Paola and New Lancaster.

LAT...LON 3858 9496 3862 9492 3853 9462 3839 9474
      3839 9476
TIME...MOT...LOC 2352Z 305DEG 27KT 3856 9490

CDB

Local storm report, May 30, 6:55 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
655 PM CDT TUE MAY 30 2017

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

0647 PM     HAIL             4 WNW PAOLA             38.61N 94.94W
05/30/2017  E1.00 INCH       MIAMI              KS   PUBLIC

            QUARTER SIZE HAIL REPORTED AT THE
            INTERSECTION OF 287TH ST AND OSAWATOMIE RD.
            VIA TWITTER.

&&

LG

Local storm report, May 30, 6:57 PM CDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
657 PM CDT TUE MAY 30 2017

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

0656 PM     HAIL             1 WSW PAOLA             38.57N 94.88W
05/30/2017  E1.00 INCH       MIAMI              KS   PUBLIC

            DIME TO QUARTER SIZE HAIL IN DOWNTOWN PAOLA.
            VIA TWITTER.

&&

LG

The office that day

Everything else NWS Kansas City, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 30, 3:45 PM CDT	Special Weather Statement	EAX	Miami	45 min
May 30, 4:01 PM CDT	Severe Thunderstorm Warning	EAX	Miami	29 min
May 30, 5:53 PM CDT	Special Weather Statement	EAX	Johnson	52 min
May 30, 6:03 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	27 min
May 30, 6:29 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Miami	46 min
May 30, 6:52 PM CDT	Special Weather Statement	EAX	Miami	23 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2017 Every severe thunderstorm warning in 2017

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.