Alert archive / Missouri / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 217, NWS Kansas City, MO

October 6, 2002Platte County, Missouri

NWS Kansas City, MO issued this severe thunderstorm warning at Oct 6, 2002, 4:18 AM CDT for Platte County, Missouri. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Oct 6, 2002, 4:18 AM CDT (09:18 UTC)
Expired: Oct 6, 2002, 5:00 AM CDT
In force: 42 min
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Platte County, MO

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 9.3 hours before the alert went out and 83 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2274 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 171 m²/s²
0-3 km storm-relative helicity: 345 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.

870 
WUUS53 KEAX 060918
SVRMCI
MOC165-061000-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
416 AM CDT SUN OCT 6 2002

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN PLATTE COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 500 AM CDT

* AT 414 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  LEAVENWORTH...OR 20 MILES EAST OF OSKALOOSA...AND MOVING EAST AT 40
  MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   PLATTE CITY BY 425 AM CDT
   DEARBORN BY 430 AM CDT
   RIDGELY...EDGERTON BY 440 AM CDT

THE TOWN OF TRACY IS ALSO IN THE PATH OF THIS STORM.

THIS STORM HAS A HISTORY OF QUARTER SIZE HAIL. SEEK SHELTER NOW INSIDE 
A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE OFFICE IN
PLEASANT HILL.

LAT...LON 3951 9505 3931 9490 3931 9462 3952 9464

SEAMAN

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 Oct 6, 3:58 AM CDT, 20 minutes earlier.

Area forecast discussion, Oct 6, 3:58 AM CDT, 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
358 AM CDT SUN OCT 6 2002

IT TURNS OUT THERE WAS PLENTY OF MOISTURE AVAILABLE TO PRODUCE AN
AREA OF STRONG THUNDERSTORMS ACROSS CENTRAL KANSAS...IN AN AREA OF
STRONG WARM AIR ADVECTION AHEAD OF AN ELEVATED PRE-FRONTAL TROUGH.
IN FACT THERE WAS ENOUGH MOISTURE AVAILABLE TO PRODUCE A NARROW LINE
OF SHOWERS AND POSSIBLY THUNDERSTORMS ACROSS WEST CENTRAL MISSOURI.
THESE DEVELOPED ALONG THE EASTERN EDGE OF THE 850MB THETA-E RIDGE
SHORTLY AFTER MIDNIGHT AND QUICKLY MOVED EAST.

EXPECT THE THUNDERSTORMS TO CONTINUE TO MOVE EAST ACROSS MOST OF THE
FORECAST AREA THIS MORNING...WITH THE STRONGEST STORMS TO AFFECT THE
CENTRAL PORTIONS OF MISSOURI WHERE BEST MOISTURE WILL BE. THE
SURFACE AND 850MB FRONT QUICKLY PUSH THROUGH BY MIDDAY TODAY. 850MB
WINDS ARE PROGGED TO BE IN THE 25 TO 35 KT RANGE...SO GOING FORECAST
OF 20 TO 30 MPH WINDS THIS AFTERNOON LOOK GOOD. HIGH PRESSURE MOVES
IN OVERNIGHT...ALLOWING WINDS TO DIMINISH TO 5 TO 15 MPH ACROSS THE
AREA.

TEMPERATURES WILL BE TRICKY TODAY WITH FRONTAL PASSAGE EXPECTED
MIDDAY. MORNING READINGS WILL BE IN THE MID TO UPPER 50S. FRONT IS
LAGGING BEHIND THE LINE OF STORMS SO IT SHOULD BE POSSIBLE TO GET AT
LEAST INTO THE UPPER 60S/LOWER 70S ACROSS MOST OF THE AREA WITH ANY
AMOUNT OF SUN. IT SHOULD BE COOLER IN THE NORTHWEST CORNER OF
MISSOURI WHERE THE FRONT WILL MOVE THROUGH THE EARLIEST.

LOW TEMPERATURES TONIGHT WILL BE THE COLDEST OF THE SEASON SO FAR.
READINGS SHOULD COOL INTO THE MID AND UPPER 30S ACROSS THE ENTIRE
AREA. DAY SHIFT WILL HAVE TO SEE HOW LIGHT THE WINDS BECOMING FOR
POSSIBLE FROST ADVISORY.

NRR

.EAX...
KS...NONE.
MO...NONE.

Hazardous weather outlook, Oct 5, 1:00 PM CDT, 15 hours 18 minutes before

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-061100-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
100 PM CDT SAT OCT 5 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST...NORTH CENTRAL AND
WEST CENTRAL MISSOURI...AS WELL AS EXTREME EASTERN KANSAS.

.DAY ONE...
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER CALL TO ACTION STATEMENT...
ACTIVATION WILL NOT BE NEEDED.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

DISCUSSION: A QUICK MOVING COLD FRONT WILL MOVE THROUGH KANSAS AND
MISSOURI TOMORROW MORNING BRINGING BRISK NORTHWEST WINDS INTO THE
REGION.  A FEW THUNDERSTORMS ARE EXPECTED OVER SOUTHERN MISSOURI
AHEAD OF THIS FRONT TOMORROW...BUT A LACK OF MOISTURE SHOULD PREVENT
STORMS FROM IGNITING OVER NORTHERN PORTIONS OF THE STATE.  THE
REMAINDER OF NEXT WEEK LOOKS DRY.

THIS PRODUCT...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND CLIMATE
INFORMATION...IS AVAILABLE ON THE WEB AT HTTP://WWW.CRH.NOAA.GOV/EAX
OR AT HTTP://WEATHER.GOV.

KOCH

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 6, 4:37 AM CDT	Severe Thunderstorm Warning	EAX	Clay	53 min
Oct 6, 5:25 AM CDT	Severe Thunderstorm Warning	EAX	Lafayette	35 min

Nearby

Severe Thunderstorm Warnings in Missouri, 2002 Every severe thunderstorm warning in 2002

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.