Alert archive / Kansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 40, NWS Goodland, KS

May 18, 2018Decatur County, Norton County, Sheridan County, Kansas

NWS Goodland, KS issued this severe thunderstorm warning at May 18, 2018, 8:58 PM CDT for Decatur County, Norton County, Sheridan County, Kansas. It was in force for 47 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 18, 2018, 8:58 PM CDT (01:58 UTC)
Expired: May 18, 2018, 9:45 PM CDT
In force: 47 min
Issued by: NWS Goodland, KS
Area: Storm-based polygon
Hail: 1.75 in
Wind: 70.0 mph

Counties Decatur County, KS, Norton County, KS, Sheridan County, KS

The radar

The Goodland radar (KGLD), 129 km from the middle of the area, began a volume at 02:01 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.

What was reported inside it

Time	Report	Where	Remark
May 18, 9:07 PM CDT	HAIL 1	5 N Jennings, KS

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 one storm report to this severe thunderstorm warning; the first came 9 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 watch it was issued in

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

Issued	Product	Office	Lasted
May 18, 4:02 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 2.0 hours before the alert went out and 172 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: 864 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 689 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: -78 m²/s²
0-3 km storm-relative helicity: 1 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

037 
WUUS53 KGLD 190158
SVRGLD
KSC039-137-179-190245-
/O.NEW.KGLD.SV.W.0040.180519T0158Z-180519T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Goodland KS
858 PM CDT FRI MAY 18 2018

The National Weather Service in Goodland has issued a

* Severe Thunderstorm Warning for...
  Southwestern Norton County in northwestern Kansas...
  Northeastern Sheridan County in northwestern Kansas...
  Southeastern Decatur County in northwestern Kansas...

* Until 945 PM CDT

* At 854 PM CDT, a severe thunderstorm was located near Jennings, or
  14 miles southeast of Oberlin, moving southeast at 20 mph.

  HAZARD...Golf ball size hail and 70 mph wind gusts. 

  SOURCE...Radar indicated. 

  IMPACT...People and animals outdoors will be injured. Expect hail 
           damage to roofs, siding, windows, and vehicles. Expect 
           considerable tree damage. Wind damage is also likely to 
           mobile homes, roofs, and outbuildings. 

* Locations impacted include...
  Jennings, Clayton, Dresden, Kanona, Leoville and New Almelo. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3956 10013 3957 10016 3954 10016 3942 10029
      3967 10061 3983 10037 3969 10000
TIME...MOT...LOC 0154Z 301DEG 19KT 3967 10034 

HAIL...1.75IN
WIND...70MPH
 
$$

TL

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 Goodland, KS wrote its last area forecast discussion before this severe thunderstorm warning went out at May 18, 7:21 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, May 18, 7:21 PM CDT, 1 hour 37 minutes before

Area Forecast Discussion
National Weather Service Goodland KS
621 PM MDT Fri May 18 2018

.UPDATE...
Issued at 603 PM MDT Fri May 18 2018

Just completed an update. Main reason was to expand the severe
thunderstorm watch. Also raised pops and raised rainfall amounts
based on high resolution/CAMs have a very good handle on what is
going on.

&&

.SHORT TERM...(This evening through Saturday)
Issued at 209 PM MDT Fri May 18 2018

Forecast still looks on track for this afternoon/evening with
convection expected to form vicinity of leading edge of outflow
boundary. Latest GOES imagery suggests boundary lies along
convergent zone of stable wave clouds and cumulus streets over
northern Greeley and Wichita counties extending up toward Gove
and over to Wakeeney. HRRR has been very consistent last 6 runs or
so with timing of storm initiation around 4-5 pm MDT and location
around highway 96. Latest SPC mesoanalysis suggests there may be
a couple more hours before CINH is overcome.

Guidance points to storms quickly developing upscale with discrete
storms existing in a narrow time window early on. Not thinking
much of a tornado threat given weak 1 km bulk shear and SRH
values, but best chances would likely be across far southern part
of our forecast area late this afternoon.

Given mean wind flow and high precipitable water values, potential
for heavy rainfall exists in areas which experience training
cells, perhaps with better chances over our north and northeast
counties.

On Saturday, cold front will push through the area with GFS a bit
faster than NAM, accompanied by showers. Current forecast has
Saturday high temps ranging from low 50s NW to low 70s SE, but
frontal timing may require refinement.

.LONG TERM...(Saturday night through Friday)
Issued at 245 PM MDT Fri May 18 2018

Long range guidance suggests that split flow aloft will prevail
over the western CONUS through next week -- and that shortwave
energy digging ashore the PAC NW on Sunday will amplify into a
closed low that stalls over portions of the Intermountain West
Mon-Wed. W-SW flow aloft is expected downstream over the Rockies
and High Plains. Given a complicated synoptic pattern
characterized by split flow and a cut-off low -- confidence is
very low w/regard to sensible weather over the Tri-State area
next week.

&&

.AVIATION...(For the 00Z TAFS through 00Z Saturday evening)
Issued at 603 PM MDT Fri May 18 2018

Widespread thunderstorms that will be severe and producing heavy
rainfall are developing and expanding over the area. Prevailing
conditions will be Mvfr with occasional ifr conditions through
this period. Winds will be gusty and variable.

&&

.GLD WATCHES/WARNINGS/ADVISORIES...
KS...NONE.
CO...NONE.
NE...NONE.
&&

UPDATE...BULLER
SHORT TERM...DLF
LONG TERM...VINCENT
AVIATION...BULLER

Hazardous weather outlook, May 18, 7:29 PM CDT, 1 hour 29 minutes before

Hazardous Weather Outlook
National Weather Service Goodland KS
629 PM MDT Fri May 18 2018

COZ090>092-KSZ001>004-013>016-027>029-041-042-NEZ079>081-191200-
Yuma County-Kit Carson County-Cheyenne County-Cheyenne-Rawlins-
Decatur-Norton-Sherman-Thomas-Sheridan-Graham-Wallace-Logan-Gove-
Greeley-Wichita-Dundy-Hitchcock-Red Willow-
629 PM MDT Fri May 18 2018 /729 PM CDT Fri May 18 2018/

This hazardous weather outlook is for extreme southwest Nebraska...
northwest Kansas and east central Colorado.

.DAY ONE...TONIGHT...

Scattered to numerous thunderstorms are expected across the area
through the night. For this evening, these storms will be capable of
producing large hail, damaging winds, and a few tornadoes. Through
the night these storms will be capable of producing very heavy
rainfall that could cause flash flooding.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH FRIDAY...

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will be needed

In the hours before

Local storm report, May 18, 8:33 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
733 PM MDT FRI MAY 18 2018

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

0724 PM     HAIL             3 NW KANONA             39.83N 100.44W
05/18/2018  E1.00 INCH       DECATUR            KS   NWS EMPLOYEE

&&

BWARREN

Local storm report, May 18, 8:40 PM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
740 PM MDT FRI MAY 18 2018

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

0727 PM     HAIL             QUINTER                 39.07N 100.23W
05/18/2018  E1.75 INCH       GOVE               KS   TRAINED SPOTTER

0731 PM     HAIL             4 N COLBY               39.45N 101.05W
05/18/2018  E1.00 INCH       THOMAS             KS   TRAINED SPOTTER

&&

MBULLER

Local storm report, May 18, 8:45 PM CDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
745 PM MDT FRI MAY 18 2018

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

0738 PM     HAIL             1 SSE QUINTER           39.05N 100.23W
05/18/2018  E2.75 INCH       GOVE               KS   EMERGENCY MNGR

            REPORTED BETWEEN MILE MARKER 108 AND 109 ON I70

&&

BWARREN

Local storm report, May 18, 8:52 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
752 PM MDT FRI MAY 18 2018

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

0730 PM     HAIL             7 NW THE MONUMENT ROCKS 38.85N 100.86W
05/18/2018  M1.50 INCH       LOGAN              KS   STORM CHASER

&&

BWARREN

Local storm report, May 18, 8:53 PM CDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
753 PM MDT FRI MAY 18 2018

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

0640 PM     HAIL             7 NE ATWOOD             39.88N 100.95W
05/18/2018  E1.75 INCH       RAWLINS            KS   PUBLIC

0640 PM     TSTM WND DMG     7 NE ATWOOD             39.88N 100.95W
05/18/2018                   RAWLINS            KS   PUBLIC

            3 TO 4 INCH DIAMETER LIMBS WERE BROKEN. REPORT IS IN THE
            SAME PLACE AS THE GOLFBALL HAIL. BOTH ARE DELAYED
            REPORTS.

0740 PM     FUNNEL CLOUD     COLBY                   39.39N 101.05W
05/18/2018                   THOMAS             KS   EMERGENCY MNGR

            EMERGENCY MANAGER RECEIVED TWO REPORTS OF FUNNEL CLOUDS.
            ONE OVER THE TOWN AND JUST TO THE NORTHEAST OF TOWN.

&&

MBULLER

Local storm report, May 18, 8:56 PM CDT, 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GOODLAND KS
756 PM MDT FRI MAY 18 2018

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

0715 PM     HAIL             9 N COLBY               39.52N 101.05W
05/18/2018  E0.50 INCH       THOMAS             KS   PUBLIC

&&

BWARREN

The office that day

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

Issued	Product	Office	Counties	Lasted
May 18, 7:04 PM CDT	Flash Flood Warning	GLD	Decatur, Rawlins	3 hr
May 18, 7:13 PM CDT	Severe Thunderstorm Warning	GLD	Logan	47 min
May 18, 7:13 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Rawlins	32 min
May 18, 7:24 PM CDT	Severe Thunderstorm Warning	GLD	Rawlins	36 min
May 18, 7:28 PM CDT	Tornado Warning	GLD	Decatur	32 min
May 18, 7:31 PM CDT	Special Weather Statement	GLD	Sheridan	14 min
May 18, 7:43 PM CDT	Severe Thunderstorm Warning	GLD	Decatur	32 min
May 18, 7:49 PM CDT	Special Weather Statement	GLD	Sheridan	26 min
May 18, 7:53 PM CDT	Severe Thunderstorm Warning	GLD	Rawlins	22 min
May 18, 7:54 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Logan	51 min
May 18, 7:56 PM CDT	Tornado Warning	GLD	Decatur	34 min
May 18, 7:57 PM CDT	Tornado Warning	GLD	Gove, Sheridan	18 min
May 18, 8:01 PM CDT	Severe Thunderstorm Warning	GLD	Rawlins, Thomas	29 min
May 18, 8:09 PM CDT	Severe Thunderstorm Warning	GLD	Decatur	51 min
May 18, 8:12 PM CDT	Severe Thunderstorm Warning	GLD	Rawlins	33 min
May 18, 8:12 PM CDT	Severe Thunderstorm Warning	GLD	Gove	33 min
May 18, 8:17 PM CDT	Severe Thunderstorm Warning	GLD	Greeley, Wallace	58 min
May 18, 8:25 PM CDT	Severe Thunderstorm Warning	GLD	Thomas	35 min
May 18, 8:32 PM CDT	Severe Thunderstorm Warning	GLD	Decatur	43 min
May 18, 8:39 PM CDT	Severe Thunderstorm Warning	GLD	Rawlins	36 min
May 18, 8:40 PM CDT	Severe Thunderstorm Warning	GLD	Gove	35 min
May 18, 8:42 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Logan	33 min
May 18, 8:44 PM CDT	Tornado Warning	GLD	Thomas	16 min
May 18, 8:52 PM CDT	Severe Thunderstorm Warning	GLD	Thomas	38 min
May 18, 8:54 PM CDT	Severe Thunderstorm Warning	GLD	Gove, Graham, Sheridan	51 min
May 18, 9:02 PM CDT	Severe Thunderstorm Warning	GLD	Greeley, Logan, Sherman, Wallace	58 min
May 18, 9:06 PM CDT	Flash Flood Warning	GLD	Gove	4 hr
May 18, 9:17 PM CDT	Severe Thunderstorm Warning	GLD	Gove	13 min
May 18, 9:20 PM CDT	Severe Thunderstorm Warning	GLD	Decatur, Sheridan	25 min
May 18, 9:21 PM CDT	Flash Flood Warning	GLD	Decatur, Graham, Norton, Sheridan	6 hr
May 18, 9:22 PM CDT	Severe Thunderstorm Warning	GLD	Sheridan, Thomas	24 min
May 18, 9:49 PM CDT	Severe Thunderstorm Warning	GLD	Cheyenne	26 min
May 18, 9:58 PM CDT	Severe Thunderstorm Warning	GLD	Sherman, Thomas	47 min
May 18, 10:22 PM CDT	Severe Thunderstorm Warning	GLD	Thomas	23 min
May 18, 10:26 PM CDT	Flash Flood Warning	GLD	Sherman	4 hr

Nearby

Severe Thunderstorm Warnings in Kansas, 2018 Every severe thunderstorm warning 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.