Alert archive / Missouri / Flash Flood Warnings in 2001

Flash Flood Warning 3, NWS Kansas City, MO

April 3, 2001Johnson County, Missouri

NWS Kansas City, MO issued this flash flood warning at Apr 3, 2001, 5:39 PM CDT for Johnson County, Missouri. It was in force for 4 hr. No storm report in the archive falls 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.

The facts

Issued
Apr 3, 2001, 5:39 PM CDT (22:39 UTC)
Expired
Apr 3, 2001, 9:45 PM CDT
In force
4 hr
Issued by
NWS Kansas City, MO
Area
Whole counties; the outline is the Mesonet’s reconstruction

County Johnson County, MO

The radar

The Pleasant Hill radar (KEAX), 34 km from the middle of the area, began a volume at 22:40 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.

The nearest sounding before it

Topeka, KS (KTOP), launched 12:00Z, 10.7 hours before the alert went out and 155 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, Topeka, KS at 12:00Z on 2001-04-03Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Topeka, KS at 12:00Z on 2001-04-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 350 square meters per square second.193958Sfc1 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
2 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
449 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
350 m²/s²
0-3 km storm-relative helicity
443 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KEAX 032242
FFWEAX
MOC101-040245-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
539 PM CDT TUE APR 3 2001

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  JOHNSON COUNTY IN WEST CENTRAL MISSOURI

* UNTIL 945 PM CDT

* AT 530 PM CDT...LAW ENFORCEMENT OFFICIALS REPORTED NUMEROUS CREEKS
AND STREAMS WERE RISING OUT OF THERE BANKS. WATER FROM POST OAK
CREEK WAS OVER THE ROAD ON ROAD 200 BETWEEN BB AND 58 HIGHWAY.

* THE RUN OFF FROM THE RAIN EARLIER IN THE DAY WILL CAUSE STREAMS
ACROSS THE COUNTY TO RUN HIGH THROUGH THE EARLY EVENING HOURS.

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY.
MOVE TO HIGHER GROUND.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY.

LAT...LON 3886 9409 3860 9410 3859 9357 3892 9353

$$
PC

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 3, 6:57 AM CDTSevere Thunderstorm WarningEAXHenry, Johnson, Pettis63 min
Apr 3, 8:31 AM CDTSevere Thunderstorm WarningEAXCass, Jackson44 min
Apr 3, 8:31 AM CDTSevere Thunderstorm WarningEAXClay, Platte44 min
Apr 3, 9:33 AM CDTSevere Thunderstorm WarningEAXJohnson42 min
Apr 3, 9:48 AM CDTFlash Flood WarningEAXJackson4 hr
Apr 3, 10:18 AM CDTSevere Thunderstorm WarningEAXPettis57 min
Apr 3, 10:30 AM CDTSevere Thunderstorm WarningEAXJohnson45 min
Apr 3, 11:06 AM CDTSevere Thunderstorm WarningEAXHenry39 min
Apr 3, 11:12 AM CDTSevere Thunderstorm WarningEAXPettis63 min
Apr 3, 11:19 AM CDTFlash Flood WarningEAXPettis3 hr

Nearby

Flash Flood Warnings in Missouri, 2001Every flash flood warning in 2001

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; radar from the NEXRAD Level II archive.