Alert archive / Missouri / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 20, NWS Kansas City, MO
NWS Kansas City, MO issued this severe thunderstorm warning at Apr 20, 1997, 4:30 PM CDT for Bates County, Missouri. It was in force for 45 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
- Apr 20, 1997, 4:30 PM CDT (21:30 UTC)
- Expired
- Apr 20, 1997, 5:15 PM CDT
- In force
- 45 min
- Issued by
- NWS Kansas City, MO
- Area
- Whole counties
County Bates County, MO
The radar
The Pleasant Hill radar (KEAX), 62 km from the middle of the area, began a volume at 21:30 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 20, 4:45 PM CDT | Hail 1 | Rich Hill, MO | A Bates County severe weather spotter reported quarter-size hail 4 miles south of Rich Hill. |
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 12:00Z, 9.5 hours before the alert went out and 140 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1659 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 169 m²/s²
- 0-3 km storm-relative helicity
- 455 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMCI 202132
SVRMCI
MOC013-202215-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING...CORRECTED
NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO
430 PM CDT SUN APR 20 1997
* SEVERE THUNDERSTORM WARNING FOR
BATES COUNTY - WEST CENTRAL MISSOURI
* UNTIL 515 PM CDT
* SOME LOCATIONS AFFECTED
RICH HILL
BUTLER
ROCKVILLE
* AT 427 PM RADAR INDICATED A SEVERE THUNDERSTORM 3 MILES SOUTH OF
BUTLER MOVING EAST AT 30 MPH.
* THIS STORM WILL PRODUCE 1 INCH HAIL AND WIND GUSTS TO 60 MPH.
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER INSIDE A STRONG BUILDING.
DJVWhat 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 Apr 20, 2:47 PM CDT, 1 hour 43 minutes earlier.
Area forecast discussion, Apr 20, 2:47 PM CDT, 1 hour 43 minutes before
NORTHWEST MISSOURI FORECAST DISCUSSION NATIONAL WEATHER SERVICE PLEASANT HILL/KANSAS CITY MO 247 PM CDT SUN APR 20 1997 BIG QUESTION TODAY IS WHICH MODEL TO BELIEVE AFTER 24 HOURS. ETA WEAKER AND FASTER WITH INITIAL H5 WAVE...BUT AT H7 AND H85 LEVELS HAS TWO SYSTEMS IN THE FLOW...WITH A STRONGER H85 LOW IN NEW MEXICO BY 36 HRS. ALL THREE MODELS HAVE A DIFFERENT SOLUTION FOR H85 PATTERN IN MISSOURI BY 36 HRS WITH NGM STRONGEST AND DEEPEST. THIS LOOKS A LITTLE OVERDONE...SO WILL LEAN TOWARD THE FASTER ETA SOLUTION. THAT WILL BRING A CHANCE OF PRECIPITATION TO FCST AREA BY AFTERNOON ON MONDAY. NEXT WAVE DESCENDING RAPIDLY ON THE HEELS OF FIRST WEAKER SHORT WAVE BY MONDAY NIGHT WHICH SHOULD HELP TO DEEPEN TROUGH. HEAVIER RAIN SHOULD BE FOCUSED SOUTH OF THE REGION...BUT WITH BAND OF H85 MOISTURE THROUGH AREA...WILL NEED TO KEEP IN POPS FOR LIGHTER RAIN IN AREA THROUGH MONDAY NIGHT...AND IN EASTERN PART OF FORECAST AREA ON TUESDAY. FOR SHORT TERM...HAVING TO WATCH SOUTHERN PART OF THE FORECAST AREA FOR CONVECTIVE DEVELOPMENT. SYSTEM IS RAPIDLY MOVING SOUTHEAST SO SHOULD SEE AN END TO PRECIPITATION IN MOST OF FORECAST AREA BY MIDNIGHT. MCI CC 045/060 043/058 042 99345 PC
In the hours before
Special weather statement, Apr 20, 1:00 PM CDT, 3 hours 30 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 PLEASANT HILL/KANSAS CITY MO 100 PM CDT SUN APR 20 1997 ...STRONG THUNDERSTORMS MAY DEVELOP IN EXTREME SOUTHERN PORTION OF OUTLOOK AREA THIS AFTERNOON AND EARLY EVENING... FORECAST: NORTHERN MISSOURI AND NORTHEAST KANSAS MAINLY NORTH OF A ST. JOSEPH TO MOBERLY LINE SHOULD JUST SEE SCATTERED SHOWERS THIS AFTERNOON...ENDING FROM WEST TO EAST THIS EVENING. FURTHER SOUTH...SHOWERS WILL ALSO BE OCCURRING...BUT THUNDERSTORMS WILL ALSO BE POSSIBLE AND THE ATMOSPHERE MAY BECOME UNSTABLE ENOUGH IN THE EXTREME SOUTHERN PORTIONS OF THE OUTLOOK AREA THIS AFTERNOON FOR STRONG THUNDERSTORMS TO DEVELOP. AREAS SOUTH OF A LINE FROM LA CYGNE KANSAS TO ADRIAN AND CLINTON MISSOURI COULD SEE THESE STRONGER THUNDERSTORMS THE LATTER HALF OF THIS AFTERNOON. IF THEY DO DEVELOP...SMALL HAIL AND GUSTY WINDS WILL BE POSSIBLE. THOUGH SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME...EMERGENCY MANAGERS IN AREAS SOUTH OF KANSAS CITY SHOULD MONITOR THE WEATHER SITUATION THIS AFTERNOON IF THUNDERSTORMS BEGIN TO DEVELOP. DISCUSSION: A SURFACE LOW WILL MOVE FROM EAST CENTRAL KANSAS THIS AFTERNOON TO THE SOUTHWEST CORNER OF MISSOURI BY EARLY EVENING. IT WAS ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE THAT WILL BE MOVING INTO WESTERN MISSOURI BY THIS EVENING. THE SURFACE LOW WILL TRY TO PULL MOISTURE AND WARMER AIR NORTH INTO THE SOUTHERN PORTIONS OF THE OUTLOOK AREA THIS AFTERNOON. THIS WILL HELP TO FEED THE SHOWERS ALREADY IN THE REGION...AND MAY CAUSE STRONGER STORMS TO DEVELOP IN SOUTHEAST KANSAS AND SOUTHWEST MISSOURI...SOME WHICH MAY CLIP THE SOUTHERN PORTIONS OF THE OUTLOOK AREA. PC
Nearby
Severe Thunderstorm Warnings in Missouri, 1997Every severe thunderstorm warning in 1997
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.