Alert archive / Missouri / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 87, NWS Kansas City, MO

May 20, 1996Atchison County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at May 20, 1996, 6:39 AM CDT for Atchison County, Missouri. It was in force for 46 min. 1 report 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
May 20, 1996, 6:39 AM CDT (11:39 UTC)
Expired
May 20, 1996, 7:25 AM CDT
In force
46 min
Issued by
NWS Kansas City, MO
Area
Whole counties

County Atchison County, MO

What was reported inside it

TimeReportWhereRemark
May 20, 7:00 AM CDTHail 1Rockport, 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 11.7 hours before the alert went out and 127 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, Omaha, NE at 00:00Z on 1996-05-20Temperature 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, Omaha, NE at 00:00Z on 1996-05-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2504 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
110 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 
TTAA00 KMCI 201138
SVRMCI
MOC005-201225-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
639 AM CDT MON MAY 20 1996

* SEVERE THUNDERSTORM WARNING FOR
  ATCHISON COUNTY - NORTHWEST MISSOURI

* UNTIL 725 AM CDT
 
* SOME LOCATIONS AFFECTED
    ROCKPORT
    TARKIO
    WESTBORO

* AT 637 AM RADAR INDICATED A SEVERE THUNDERSTORM NEAR ROCKPORT
  MOVING NORTHEAST AT 45 MPH.

* THE STORM WILL AFFECT ROCKPORT...TARKIO AND WESTBORO.   HAIL UP
  TO 1 INCH IN DIAMETER IS   POSSIBLE...ALONG WITH WIND GUSTS TO 60
  MPH OR HIGHER.

WHEN THUNDERSTORMS ARE OCCURRING...DO NOT USE TELEPHONES OR OTHER
ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY.


WELVAERT

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 Kansas City, MO wrote its last area forecast discussion before this severe thunderstorm warning went out at May 20, 3:28 AM CDT, 3 hours 11 minutes earlier.

Area forecast discussion, May 20, 3:28 AM CDT, 3 hours 11 minutes before
NORTHWEST MISSOURI FORECAST DISCUSSION
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
328 AM CDT MON MAY 20 1996

CONVECTION RATHER WK THIS AM ACRS NRN PART OF CWA WITH 700MB SHRTWV
CURRENTLY MOVG THRU.  SFC FNT HAS SAGGED INTO FAR NRN MO WITH RW/TRW
MNLY ALG AND N OF BNDRY.  MODELS CONT TREND OF MOVG BNDRY THRU CWA
BY THIS EVE.

ETA AND NGM SWING ANOTHER 700MB SHRTWV INTO WRN KS BY 18Z...MOVG THRU
CWA BY ARND MIDNGT.  UA DIAGS SHOWD ASSOCD VORT CNTR AT 00Z IN NRN NM
WITH RAMSDIS INDCG FEATURE CURENTLY IN SW KS.  ETA AND NGM TSXNS FOR
EAX INDCG DECENT UVV 12-24HR TIME FRAME.  GRIDDED DATA ALSO WKNG CAP
SPCLY BY THIS EVE.

LKLY POPS IN STORE TDA N OF STJ-MCN LN...SCT S OF LN.  FOCUS fSHIFTS TO
ERN HALF OF CWA MNLY DURG EVE...ENDG W.  AS FAR AS TEMPS...GUIDANCE
APRS ON THE LOW SIDE TDA GIVEN MAXS N OF BNDRY YESTERDAY...MINS IN
LINE.

MCI 80/56 42

DJV

In the hours before

Special weather statement, May 20, 1:25 AM CDT, 5 hours 14 minutes before
KSZ102-MOZ001>007-011-012-200730-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
125 AM CDT MON MAY 20 1996

...SEVERE THUNDERSTORM WATCH NUMBER 403 HAS BEEN ALLOWED TO EXPIRE...

THE SEVERE THUNDERSTORM WATCH FOR ATCHISON...HOLT...ANDREW...
NODAWAY...WORTH...GENTRY...HARRISON...MERCER AND PUTNAM COUNTIES IN
NORTHERN MISSOURI AS WELL AS DONIPHAN COUNTY IN KANSAS HAS BEEN
ALLOWED TO EXPIRE.

SCATTERED SHOWERS AND THUNDERSTORMS CAN BE STILL BE EXPECTED
OVERNIGHT.   HOWEVER...THE THREAT OF SEVERE WEATHER HAS ENDED ACROSS
THE AREA.

DJV
Special weather statement, May 20, 5:59 AM CDT, 40 minutes before
KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-211200-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
600 AM CDT MON MAY 20 1996

...SLIGHT RISK OF SEVERE THUNDERSTORMS THROUGH THIS EVENING...

FORECAST...A COLD FRONT IN NORTHERN MISSOURI WILL BE MOVING SLOWLY
SOUTHEAST THROUGH THE OUTLOOK AREA BY THIS EVENING BRINGING SHOWERS
AND THUNDERSTORMS TO THE REGION.  A FEW OF THE THUNDERSTORMS COULD
REACH SEVERE LIMITS WITH THE MAIN THREAT DUE TO DAMAGING WINDS AND
LARGE HAIL.  THE SHOWERS AND THUNDERSTORMS WILL THEN BE ENDING ACROSS
THE AREA BY MIDNIGHT.

CIVIL DEFENSE COORDINATORS...HAM RADIO AND SPOTTER NETWORKS SHOULD
KEEP POSTED FOR WEATHER UPDATES.

DISCUSSION...A COLD FRONT FROM NEAR SAINT JOSEPH TO KIRKSVILLE
WILL SAG SLOWLY SOUTHEAST THROUGH THE OUTLOOK AREA BY THIS EVENING.
AT THE SAME TIME...AN UPPER LEVEL DISTURBANCE WILL BE MOVING
NORTHEAST THROUGH THE AREA&.  THIS WILL AID IN SHOWER AND THUNDERSTORM
DEVELOPMENT ALONG AND NORTH OF THE COLD FRONT THROUGH THE EVENING
HOURS.

DJV

Nearby

Severe Thunderstorm Warnings in Missouri, 1996Every severe thunderstorm warning in 1996

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.