Alert archive / Kansas / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 68, NWS Kansas City, MO

May 11, 2000Atchison County, Kansas

NWS Kansas City, MO issued this severe thunderstorm warning at May 11, 2000, 7:44 PM CDT for Atchison County, Kansas. It was in force for 31 min. 2 reports 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: May 11, 2000, 7:44 PM CDT (00:44 UTC)
Expired: May 11, 2000, 8:15 PM CDT
In force: 31 min
Issued by: NWS Kansas City, MO
Area: Whole counties; the outline is the Mesonet’s reconstruction

County Atchison County, KS

The radar

The Topeka radar (KTWX), 101 km from the middle of the area, began a volume at 00:43 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 11, 8:05 PM CDT	Hail 0.75	Effingham, KS
May 11, 8:12 PM CDT	Hail 0.75	Atchison, 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 11, 7:00 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 0.7 hours before the alert went out and 67 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: 4491 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1450 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 181 m²/s²
0-3 km storm-relative helicity: 232 m²/s²
Significant tornado parameter: 3.3
Supercell composite: 30.9

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KEAX 120044
SVRMCI
KSC005-120115-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
744 PM CDT THU MAY 11 2000

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ATCHISON COUNTY IN NORTHEAST KANSAS
  THIS INCLUDES THE CITY OF ATCHISON

* UNTIL 815 PM CDT

* AT 740 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM OVER LANCASTER KS...OR ABOUT 9 MILES WEST OF
  ATCHISON...MOVING NORTHEAST AT 35 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  OVER ATCHISON AT 750 PM CDT

* OTHER LOCATIONS IN THE WARNING INCLUDE MUSCOTAH...EFFINGHAM...
  CUMMINGS AND ARRINGTON.

THIS SEVERE THUNDERSTORM WILL LIKELY PRODUCE HAIL UP TO 1 INCH IN
DIAMETER...AND WINDS IN EXCESS OF 60 MPH. 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 3962 9553 3942 9556 3944 9502 3950 9506
          3965 9507

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 11, 3:05 PM CDT, 4 hours 39 minutes earlier.

Area forecast discussion, May 11, 3:05 PM CDT, 4 hours 39 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
305 PM CDT THU MAY 11 2000

FCST CHALLENGES CONCERN TEMPS TNGT/SAT AND TSTMS CHCS. 19Z SFC DATA
SHOWS LOW HAS MOVED E INTO W CNTRL IA WITH CDFNT TRAILING SW THRU SE
NEB TO A DVLPG LOW OVR SE CO. IA LOW WILL CONT E AND FIZZLE WITH
CDFNT STALLING IN NW CRNR MO THIS EVE. EXPC CO LOW TO DEEPEN AND
LIFT NE AS UPSTRM SHRTWV MOVS E INTO SW CO BY 12Z FRI. SHRTWV IS
STGR AND SLOER THAN LAST NGTS PROGS. DRY SLOT IN WV IMAGERY BGNG TO
CUT UNDER SHRTWV SUGG DEPEENING PROCESS ABT OVR.

VERY STG SWLY SFC WNDS HV WEAKENED SOME THIS AFTN AS H8 WIND MAX
LIFTED NE. WINDS ARE NOW BLO ADV CRITERIA ALL BUT NERN CNTYS. THIS
WEAKENING TREND IN WINDS EXPCD TO CONT THIS EVE AND SEE NO REASON TO
KEEP WIND ADV GOING. WILL MENTION BREEZY IN ZONES.

IMPRESSIVE CAP AT H7 SHOWED UP IN MRNG RAOBS. THIS SAME AMS EXPCD TO
RMN OVR CWA TNGT. NGM COOLS H7 TEMPS TOO MUCH TNGT WHILE ETA HOLDS
ONTO THIS HOT POCKET. CAP WILL STOP ANY PRE-FNTL CNVTN TNGT DESPITE
VERY UNSTBL AMS. ANY POST FNTL CNVTN WILL LIKELY OCR 50-100 MILES OR
MORE BHND CDFNT DUE TO LIMITED MID LVL COOLG BHND CDFNT TNGT.
OVERALL FAVOR ETA SOLUTION WITH AVN SFC TEMPS BEST FIT. CDFNT EXPCD
TO RCH A STJ-BETHANY LN BY 12Z FRI. THUS WILL DROP POPS TNGT IN WRM
SECTOR AND LV CHC POPS BND CDFNT IN NW MO. WILL GO ABV GUID MIN
TEMPS IN WRM SECTOR.

CDFNT LIKLEY TO EXIT SERN CWA BY ERY AFTN. OWING TO WRMR START THAN
PROGGED FEEL MAX TEMPS IN UPR 80S IN SE LOOKS GD UNTIL FROPA ARND
18Z. WILL KEEP CHC POPS FOR TMRW AS SOME MID LVL COOLG FINALLY
ARRIVES WITH CO SHRTWV AND FEEL PTNL EXISTS FOR SOME POST FNTL
CNVTN. WILL ONLY MENTION MRNG POPS IN THE NW.

MUCH COOLER/DRIER AIR FOLLOWS ON SAT AS LRG SFC HIGH SETTLES INTO
RGN. GUID TEMPS LOOKS RSNBL AND FOLLOWED.

.EAX...

JULY

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:18 PM CDT	Severe Thunderstorm Warning	EAX	Atchison, Doniphan	27 min
May 11, 8:15 PM CDT	Severe Thunderstorm Warning	EAX	Atchison	45 min
May 11, 9:31 PM CDT	Tornado Warning	EAX	Leavenworth	44 min
May 11, 10:00 PM CDT	Tornado Warning	EAX	Leavenworth, Wyandotte	45 min
May 11, 10:08 PM CDT	Severe Thunderstorm Warning	EAX	Johnson	52 min
May 11, 11:15 PM CDT	Severe Thunderstorm Warning	EAX	Johnson, Wyandotte	60 min
May 12, 12:18 AM CDT	Severe Thunderstorm Warning	EAX	Atchison	42 min
May 12, 12:43 AM CDT	Tornado Warning	EAX	Atchison, Leavenworth	62 min
May 12, 1:23 AM CDT	Severe Thunderstorm Warning	EAX	Doniphan	52 min

Nearby

Severe Thunderstorm Warnings in Kansas, 2000 Every severe thunderstorm warning in 2000

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.