Alert archive / Kansas / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 55, NWS Hastings, NE

May 20, 1999Mitchell County, Kansas

NWS Hastings, NE issued this severe thunderstorm warning at May 20, 1999, 3:51 PM CDT for Mitchell County, Kansas. It was in force for 39 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
May 20, 1999, 3:51 PM CDT (20:51 UTC)
Expired
May 20, 1999, 4:30 PM CDT
In force
39 min
Issued by
NWS Hastings, NE
Area
Whole counties

County Mitchell County, KS

The radar

The Grand Island radar (KUEX), 105 km from the middle of the area, began a volume at 20:50 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
May 20, 2:30 PM CDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 8.9 hours before the alert went out and 226 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 12:00Z on 1999-05-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Topeka, KS at 12:00Z on 1999-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 83 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1336 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
83 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

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

IssuedProductOfficeCountiesLasted
May 20, 1:46 PM CDTSevere Thunderstorm WarningGIDFranklin, Harlan44 min
May 20, 2:26 PM CDTSevere Thunderstorm WarningGIDFranklin, Webster49 min
May 20, 3:12 PM CDTSevere Thunderstorm WarningGIDWebster48 min
May 20, 3:15 PM CDTFlash Flood WarningGIDWebster2 hr
May 20, 3:34 PM CDTSevere Thunderstorm WarningGIDNuckolls41 min
May 20, 4:02 PM CDTSevere Thunderstorm WarningGIDNuckolls48 min
May 20, 4:04 PM CDTFlash Flood WarningGIDNuckolls86 min
May 20, 4:17 PM CDTSevere Thunderstorm WarningGIDClay, Fillmore, Thayer58 min
May 20, 2:36 PM CDTSevere Thunderstorm WarningGIDSmith24 min
May 20, 2:44 PM CDTSevere Thunderstorm WarningGIDOsborne61 min
May 20, 3:41 PM CDTSevere Thunderstorm WarningGIDOsborne49 min
May 20, 4:28 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell47 min

Nearby

Severe Thunderstorm Warnings in Kansas, 1999Every severe thunderstorm warning in 1999

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.