Alert archive / Kansas / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 257, NWS Hastings, NE

October 1, 2017Phillips County, Rooks County, Kansas

NWS Hastings, NE issued this severe thunderstorm warning at Oct 1, 2017, 6:34 PM CDT for Phillips County, Rooks County, Kansas. It was in force for 41 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
Oct 1, 2017, 6:34 PM CDT (23:34 UTC)
Expired
Oct 1, 2017, 7:15 PM CDT
In force
41 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon
Tornado
Possible
Hail
2.0 in
Wind
70.0 mph

Counties Phillips County, KS, Rooks County, KS

The radar

The Grand Island radar (KUEX), 113 km from the middle of the area, began a volume at 23:37 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.

IssuedProductOfficeLasted
Oct 1, 3:25 PM CDTTornado WatchSPC8 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.6 hours before the alert went out and 204 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 12:00Z on 2017-10-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 280 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 12:00Z on 2017-10-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
280 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
1058 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
-15 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.8

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 Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 1, 3:26 PM CDT, 3 hours 8 minutes earlier.

Area forecast discussion, Oct 1, 3:26 PM CDT, 3 hours 8 minutes before
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Hazardous weather outlook, Oct 1, 2:24 PM CDT, 4 hours 10 minutes before
Hazardous Weather Outlook
National Weather Service Hastings NE
224 PM CDT Sun Oct 1 2017

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
021930-
Phillips-Smith-Jewell-Rooks-Osborne-Mitchell-Valley-Greeley-Nance-
Sherman-Howard-Merrick-Polk-Dawson-Buffalo-Hall-Hamilton-York-
Gosper-Phelps-Kearney-Adams-Clay-Fillmore-Furnas-Harlan-Franklin-
Webster-Nuckolls-Thayer-
224 PM CDT Sun Oct 1 2017

This Hazardous Weather Outlook is for south central Nebraska and
portions of north central Kansas.

.DAY ONE...This afternoon and tonight.

There is a chance for strong to severe thunderstorms this
afternoon and evening. The best chance for severe thunderstorms
will between 6 pm and midnight...and primarily west of highway
281. The main severe weather threats include hail to the size of
Tennis balls...70 mph winds...as well as an isolated tornado or
two.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

There are multiple chances for thunderstorms across the local
area through the middle of the upcoming work week. The best chance
for any strong or severe thunderstorms will be along a cold
front during the afternoon and evening hours Monday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is expected for areas mainly west of highway
281 later this afternoon or evening. Any reports of large
hail...strong thunderstorm wind gusts...or funnel clouds would be
very much appreciated.

&&

More information may be obtained at the following web page:
   https://www.weather.gov/hastings

Rossi

In the hours before

Special weather statement, Oct 1, 5:13 PM CDT, 1 hour 21 minutes before
Special Weather Statement
National Weather Service Hastings NE
513 PM CDT SUN OCT 1 2017

NEZ082-012245-
Furnas NE-
513 PM CDT SUN OCT 1 2017

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN FURNAS COUNTY UNTIL 545
PM CDT...

At 512 PM CDT, Doppler radar was tracking a strong thunderstorm near
Norcatur, or 12 miles east of Oberlin, moving northeast at 45 mph.

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

Locations impacted include...
Cambridge, Arapahoe, Holbrook, Wilsonville and Hendley.

A tornado watch remains in effect until 1100 PM CDT for south central
Nebraska.

LAT...LON 4035 10020 4035 9989 4000 9988 4000 10019
TIME...MOT...LOC 2212Z 212DEG 38KT 3986 10030

Rossi
Special weather statement, Oct 1, 6:22 PM CDT, 12 minutes before
Special Weather Statement
National Weather Service Hastings NE
622 PM CDT SUN OCT 1 2017

KSZ005-017-012345-
Rooks KS-Phillips KS-
622 PM CDT SUN OCT 1 2017

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN ROOKS AND SOUTHWESTERN
PHILLIPS COUNTIES UNTIL 645 PM CDT...

At 620 PM CDT, Doppler radar was tracking a severe thunderstorm near
Bogue, or near Hill City, moving east at 50 mph.

Tennis ball size hail and winds in excess of 70 mph will be possible
with this storm. This storm is also capable of producing tornadoes.

People in northern Rooks and southwestern Phillips Counties should
monitor the weather situation closely.  A warning may be needed if
the storm maintains its intensity and moves into the area.  Be ready
to seek shelter if severe weather threatens.

LAT...LON 3957 9960 3957 9963 3967 9963 3973 9921
      3939 9913 3936 9960
TIME...MOT...LOC 2320Z 255DEG 46KT 3942 9974

Wesely

The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 1, 5:13 PM CDTSpecial Weather StatementGIDFurnas32 min
Oct 1, 6:22 PM CDTSpecial Weather StatementGIDRooks23 min
Oct 1, 6:46 PM CDTTornado WarningGIDPhillips, Rooks44 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2017Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.