Alert archive / Kansas / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 106, NWS Kansas City, MO

May 7, 2002Linn County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at May 7, 2002, 8:06 AM CDT for Linn County, Kansas. It was in force for 39 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 7, 2002, 8:06 AM CDT (13:06 UTC)
Expired: May 7, 2002, 8:45 AM CDT
In force: 39 min
Issued by: NWS Kansas City, MO
Area: Counties, with a storm outline in the text

County Linn County, KS

The radar

The Pleasant Hill radar (KEAX), 103 km from the middle of the area, began a volume at 13:07 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
May 7, 8:06 AM CDT	Hail 0.88	Kincaid, KS

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.

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 12:00Z, 1.1 hours before the alert went out and 114 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: 77 J/kg
Mixed-layer CIN: -576 J/kg
Mixed-layer LCL: 1525 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KEAX 071306
SVRMCI
KSC107-071345-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
806 AM CDT TUE MAY 7 2002

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN LINN COUNTY IN EAST CENTRAL KANSAS

* UNTIL 845 AM CDT

* AT 802 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  A SEVERE THUNDERSTORM CAPABLE OF PRODUCING LARGE DAMAGING HAIL     
  GOLF BALL SIZE OR LARGER.  THIS STORM WAS LOCATED NEAR 
  KINCAID...OR 15 MILES SOUTH OF GARNETT...AND MOVING EAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
   CENTERVILLE KS BY 810 AM CDT.
   BLUE MOUND BY 815 AM CDT.
   MOUND CITY KS BY 830 AM CDT.
   PLEASANTON...TRADING POST BY 835 AM CDT.
   PRESCOTT BY 840 AM CDT.

THIS STORM HAS A HISTORY OF PRODUCING GOLF BALL SIZED 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 3819 9526 3801 9532 3780 9463 3830 9463

SF

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 7, 4:30 AM CDT, 3 hours 36 minutes earlier.

Area forecast discussion, May 7, 4:30 AM CDT, 3 hours 36 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
430 AM CDT TUE MAY 7 2002

OVERNIGHT CONVECTION MOVED OUT OF THE CWA AROUND 3 AM. HAIL AND
STRONG WINDS WERE THE SEVERE WEATHER VERIFIERS FOR THE EVENT.  MUCH
THE SAME LOOKS TO BE AHEAD OF US AGAIN FOR TONIGHT.

AVN AND ETA MODELS ARE IN FAIRLY CLOSE AGREEMENT THAT THIS
MORNINGS FRONTAL BOUNDARY WILL LIFT BACK TO THE NORTH TODAY AS A
LARGE SHORT WAVE MOVES INTO THE UPPER MIDWEST.  THE ASSOCIATED
SURFACE LOW LOOKS TO STRENGTHEN ACROSS WEST NEBRASKA AND KANSAS
BEFORE MOVING TO THE NORTHEAST THROUGH THE MO/IA/NE/KS BORDER REGION
TONIGHT. WITH THE LLJ POINTING INTO CENTRAL MISSOURI FROM
OKLAHOMA...L.I.S HIGH AND THE CAP IS LOW... ANOTHER ROUND OF
THUNDERSTORMS IS A GOOD BET FOR TONIGHT.  I AM EXPECTING THE BEST
FOCUS FOR DEVELOPMENT OF STORMS TO BE IN NORTH MISSOURI AS THE
SURFACE BOUNDARY SHOULD HAVE RETREATED TO THE NORTH WITH THE HELP OF
THE STRENGTHENING LOW TO THE WEST.

FOR WEDNESDAY THE SURFACE LOW WILL CONTINUE TO MOVE
NORTHEAST...KEEPING US IN THE WARM SECTOR THROUGHOUT THE DAY.  HIGH
THETA-E AIR MASS WILL REMAIN IN PLACE OVER THE CWA UNTIL EARLY
NIGHTFALL. THEN HIGH PRESSURE WILL BUILD IN BEHIND A COLD FRONT THAT
WILL BE DRAGGED THROUGH THE CWA BY THE RETREATING LOW.  THIS SHOULD
GIVE USE A FEW DAYS BREAK FROM THE CONVECTION.

THE WHOLE PATTERN LOOKS TO TRY AND REPEAT ITSELF FOR THE WEEKEND.
CONTINUED SPLIT FLOW WILL ALLOW FOR ANOTHER ROUND OF STRONG WAA
ACROSS THE MIDWEST WITH IMPULSES CONTINUING TO MOVE THROUGH THE
BOTTOM OF YET ANOTHER WEST COAST TROUGH.  THEREFOR...HAVE CONTINUED
TO HOLD ONTO THE CHANCE OF THUNDERSTORMS FOR THE WEEKEND STARTING
FRIDAY NIGHT...AS ANOTHER SURFACE LOW MOVES INTO WEST NEBRASKA AND
KANSAS.

CUTTER

.EAX
MO...FLOOD WATCH TUESDAY MORNING...
ZNS011>015-020>025-028>033-037>040-043>046-053-054
KS...FLOOD WATCH TUESDAY MORNING...ZNS025-057-060-102>105

In the hours before

Local storm report, May 7, 3:12 AM CDT, 4 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
312 AM CDT TUE MAY 07 2002

TIME(CDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0212 AM    SWEET SPGS                MO   FLOOD
05/07/02   SALINE                         SALT FORK CREEK
                                          FLOODING CO ROAD 415 S.
                                          OF MALTA.  SALT POND
                                          CREEK OVER HWY 127 N.
                                          OF SWEET SPRINGS. HWY
                                          417 FLOODED BY SALT
                                          FORK CREEK EAST OF
                                          MALTA. REPORTED BY LAW
                                          ENFORCEMENT OFFICIAL.

Special weather statement, May 7, 5:46 AM CDT, 2 hours 20 minutes before

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-081100-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
546 AM CDT TUE MAY 7 2002

* HAZARDS EXPECTED -
SEVERE THUNDERSTORMS ARE LIKELY THIS EVENING...WITH THE GREATEST
THREAT NORTH OF A LINE FROM ST JOSEPH TO CHILLICOTHE TO MACON. THE
PRIMARY THREATS ARE VERY HEAVY RAIN...HAIL AND DAMAGING WINDS.

SEVERE THUNDERSTORMS MAY CONTINUE INTO THE MORNING HOURS ON
WEDNESDAY...WITH THE THREAT OF SEVERE WEATHER REDEVELOPING FOR
WEDNESDAY EVENING.

THE NEXT THREAT OF SEVERE WEATHER WILL BE SATURDAY OR SUNDAY.

* SPOTTER ACTIVATION -
WILL LIKELY BE REQUIRED THIS EVENING FOR AREAS NORTH OF INTERSTATE
70.

DISCUSSION: A BOUNDARY...LOCATED FROM SOUTHEASTERN KANSAS EAST INTO
SOUTHWESTERN MISSOURI...WILL LIFT NORTH TODAY AS ANOTHER SURFACE LOW
SPINS UP OVER WEST KANSAS.  THE WARM...MOIST AND UNSTABLE AIR MASS
WILL FLOW NORTH...AND IN THE VICINITY OF THE SURFACE BOUNDARIES
WIDESPREAD THUNDERSTORM DEVELOPMENT WILL BE POSSIBLE...ESPECIALLY
TONIGHT IN NORTHERN MISSOURI. IN ADDITION...FLOODING WILL BE
POSSIBLE...IF THE HEAVY RAINFALL FALLS ON ALREADY SATURATED AREAS
ALONG AND NORTH OF INTERSTATE 70.

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.

RC

The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 9:35 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	55 min
May 6, 10:29 PM CDT	Severe Thunderstorm Warning	EAX	Leavenworth	61 min
May 6, 10:45 PM CDT	Severe Thunderstorm Warning	EAX	Wyandotte	45 min
May 6, 11:13 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	62 min
May 6, 11:38 PM CDT	Severe Thunderstorm Warning	EAX	Miami	52 min
May 6, 11:47 PM CDT	Severe Thunderstorm Warning	EAX	Linn	58 min
May 7, 10:05 AM CDT	Severe Thunderstorm Warning	EAX	Linn, Miami	70 min

Nearby

Severe Thunderstorm Warnings in Kansas, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.