Alert archive / Missouri / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 9, NWS Kansas City, MO

April 3, 2001Johnson County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Apr 3, 2001, 9:33 AM CDT for Johnson County, Missouri. It was in force for 42 min. 1 report came from inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.

The facts

Issued: Apr 3, 2001, 9:33 AM CDT (14:33 UTC)
Expired: Apr 3, 2001, 10:15 AM CDT
In force: 42 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Johnson County, MO

The radar

The Pleasant Hill radar (KEAX), 34 km from the middle of the area, began a volume at 14:34 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
Apr 3, 9:56 AM CDT	Hail 1	Warrensburg, MO

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 watch it was issued in

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

Issued	Product	Office	Lasted
Apr 3, 8:00 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 2.6 hours before the alert went out and 155 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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 449 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 350 m²/s²
0-3 km storm-relative helicity: 443 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.0

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KEAX 031433
SVRMCI
MOC101-031515-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
933 AM CDT TUE APR 3 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  JOHNSON COUNTY IN WEST CENTRAL MISSOURI
  THIS INCLUDES THE CITIES OF...HOLDEN...KNOB NOSTER...WARRENSBURG...
  WHITEMAN AFB

* UNTIL 1015 AM CDT

* AT 933 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER HOLDEN...OR ABOUT 3 MILES SOUTHEAST OF
  HOLDEN...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CENTERVIEW AT 940 AM CDT
  WARRENSBURG AT 950 AM CDT
  WHITEMAN AFB AT 1000 AM CDT
  KNOB NOSTER AT 1005 AM CDT

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE HAIL UP TO 1 INCH IN 
DIAMETER.. FOR YOUR SAFETY...MOVE INDOORS AND STAY AWAY FROM 
WINDOWS. REMEMBER...LIGHTNING IS A THREAT FROM ALL THUNDERSTORMS. 
HEAVY RAINS CAN CAUSE LOCALIZED FLOODING OF LOW LYING AREAS.

LAT...LON 3886 9410 3857 9410 3858 9354 3891 9353

BUNTING

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 3, 6:57 AM CDT	Severe Thunderstorm Warning	EAX	Henry, Johnson, Pettis	63 min
Apr 3, 8:31 AM CDT	Severe Thunderstorm Warning	EAX	Cass, Jackson	44 min
Apr 3, 8:31 AM CDT	Severe Thunderstorm Warning	EAX	Clay, Platte	44 min
Apr 3, 9:48 AM CDT	Flash Flood Warning	EAX	Jackson	4 hr
Apr 3, 10:18 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	57 min
Apr 3, 10:30 AM CDT	Severe Thunderstorm Warning	EAX	Johnson	45 min
Apr 3, 11:06 AM CDT	Severe Thunderstorm Warning	EAX	Henry	39 min
Apr 3, 11:12 AM CDT	Severe Thunderstorm Warning	EAX	Pettis	63 min
Apr 3, 11:19 AM CDT	Flash Flood Warning	EAX	Pettis	3 hr
Apr 3, 5:39 PM CDT	Flash Flood Warning	EAX	Johnson	4 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2001 Every severe thunderstorm warning in 2001

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.