Alert archive / Kansas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 79, NWS Topeka, KS

July 20, 2000Brown County, Nemaha County, Kansas

NWS Topeka, KS issued this severe thunderstorm warning at Jul 20, 2000, 3:09 AM CDT for Brown County, Nemaha County, Kansas. It was in force for 36 min. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jul 20, 2000, 3:09 AM CDT (08:09 UTC)
Expired
Jul 20, 2000, 3:45 AM CDT
In force
36 min
Issued by
NWS Topeka, KS
Area
Whole counties

Counties Brown County, KS, Nemaha County, KS

The radar

The Topeka radar (KTWX), 98 km from the middle of the area, began a volume at 08:09 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

TimeReportWhereRemark
Jul 20, 3:10 AM CDTHail 0.88Hiawatha, KS
Jul 20, 3:16 AM CDTThunderstorm Wind 55 ESabetha, KS
Jul 20, 3:18 AM CDTHail 1Sabetha, KS
Jul 20, 3:24 AM CDTThunderstorm Wind 54 MHiawatha, KS
Jul 20, 3:34 AM CDTThunderstorm Wind 61 EHiawatha, KSStrong winds damaged a barn south of Hiawatha.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 8.2 hours before the alert went out and 90 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, Topeka, KS at 00:00Z on 2000-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 383 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 00:00Z on 2000-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 2 square meters per square second.19395878Sfc1 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
383 J/kg
Mixed-layer CIN
-323 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
58 kt
0-1 km storm-relative helicity
2 m²/s²
0-3 km storm-relative helicity
129 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KTOP 200809
SVRTOP
KSC013-131-200845-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TOPEKA KS
309 AM CDT THU JUL 20 2000

THE NATIONAL WEATHER SERVICE IN TOPEKA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BROWN COUNTY IN NORTHEAST KANSAS
  EASTERN NEMAHA COUNTY IN NORTHEAST KANSAS

* UNTIL 345 AM CDT

* AT 304 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 8 MILES NORTH OF RESERVE TO 5
  MILES SOUTHWEST OF SENECA...OR FROM 17 MILES NORTH OF HIAWATHA TO
  28 MILES EAST OF MARYSVILLE...MOVING SOUTHEAST AT 50 MPH.

* SOME LOCATIONS AFFECTED...
  MORRILL
  RESERVE
  FAIRVIEW
  HIAWATHA
  WETMORE
  POWHATTAN
  ROBINSON
  WILLIS
  HORTON
  EVEREST

QUARTER SIZED HAIL WAS REPORTED IN SENECA AT 308 AM.

THIS EXTENDS THE SEVERE THUNDERSTORM WARNING ISSUED EARLIER FOR NEMAHA
COUNTY.

LARGE HAIL...VERY HEAVY RAIN AND DAMAGING WINDS ARE LIKELY WITH THIS
STORM. TAKE COVER INSIDE A BUILDING.

STAY TUNED TO NOAA WEATHER RADIO OR LOCAL MEDIA OUTLETS FOR THE
LATEST SEVERE WEATHER INFORMATION.

$$

58

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 2:36 AM CDTSevere Thunderstorm WarningTOPMarshall, Nemaha39 min
Jul 20, 5:20 PM CDTSevere Thunderstorm WarningTOPMorris30 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2000Every severe thunderstorm warning in 2000

Sources

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