Alert archive / Kansas / Flash Flood Warnings in 2021
Flash Flood Warning 4, NWS Kansas City, MO
NWS Kansas City, MO issued this flash flood warning at May 16, 2021, 6:30 PM CDT for Johnson County, Wyandotte County, Kansas; Jackson County, Missouri. It was in force for 6 hr. 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 16, 2021, 6:30 PM CDT (23:30 UTC)
- Expired
- May 17, 2021, 12:30 AM CDT
- In force
- 6 hr
- Issued by
- NWS Kansas City, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Johnson County, KS, Wyandotte County, KS, Jackson County, MO
The radar
The Pleasant Hill radar (KEAX), 43 km from the middle of the area, began a volume at 23:29 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 16, 6:30 PM CDT | FLASH FLOOD | Mission Woods, KS | DELAYED REPORT... PUBLIC REPORTS SIGNIFICANT WATER FLOWING OVER PORTION OF WARD PARKWAY NEAR BRUSH CREEK. IMPASSABLE BY AUTOMOBILES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.5 hours before the alert went out and 248 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
- 122 J/kg
- Mixed-layer CIN
- -133 J/kg
- Mixed-layer LCL
- 1041 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
613
WGUS53 KEAX 162330
FFWEAX
KSC091-209-MOC095-170530-
/O.NEW.KEAX.FF.W.0004.210516T2330Z-210517T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
630 PM CDT Sun May 16 2021
The National Weather Service in Pleasant Hill MO has issued a
* Flash Flood Warning for...
Central Johnson KS County in east central Kansas...
East Central Wyandotte County in northeastern Kansas...
West Central Jackson County in west central Missouri...
* Until 1230 AM CDT.
* At 630 PM CDT, the public reported thunderstorms producing heavy
rain. Reports of flowing water over roadways in several locations
across the warned area including near Brush Creek along the state
line. Between 2.5 and 3.5 inches of rain have fallen. The expected
rainfall rate is 0.75 to 1.5 inches in 1 hour. Additional rainfall
amounts of 1 to 2 inches are possible in the warned area. Flash
flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Public reported.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Kansas City, Overland Park, Olathe, Shawnee, Lenexa, Leawood,
Prairie Village, Gardner, Merriam, Mission, De Soto, North Kansas
City, Fairway, Mission Hills, Westwood, Lake Quivira, Westwood
Hills, Mission Woods and Countryside.
This includes the following highways...
Interstate 435 between mile markers 0 and 6...and
between mile markers 56 and 61...and
near mile marker 63...and
between mile markers 79 and 83.
Interstate 35 in Kansas between mile markers 218 and 235.
Interstate 635 between mile markers 0 and 2.
Interstate 35 in Missouri between mile markers 0 and 4.
Interstate 70 in Kansas between mile markers 421 and 422.
Interstate 70 in Missouri between mile markers 1 and 7.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3915 9453 3914 9448 3907 9449 3901 9451
3890 9473 3881 9506 3893 9506 3902 9479
FLASH FLOOD...OBSERVED
EXPECTED RAINFALL...0.75-1.5 INCHES IN 1 HOUR
$$
Kurtz3 follow-up statements
721
WGUS73 KEAX 170158
FFSEAX
Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
858 PM CDT Sun May 16 2021
KSC091-209-MOC095-170530-
/O.CON.KEAX.FF.W.0004.000000T0000Z-210517T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnson KS KS-Wyandotte KS-Jackson MO-
858 PM CDT Sun May 16 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT MONDAY
FOR CENTRAL JOHNSON KS, EAST CENTRAL WYANDOTTE AND WEST CENTRAL
JACKSON COUNTIES...
At 858 PM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain across portions of the Kansas
City Metro area. Public reports of flowing water over roadways in
several locations has been reported. Between 3 and 4 inches of rain
have fallen. The expected rainfall rate is 0.5 to 1 inch in 1 hour.
Additional rainfall amounts of 0.5 to 1 inch are possible in the
warned area. Flash flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Kansas City, Overland Park, Olathe, Shawnee, Lenexa, Leawood,
Prairie Village, Gardner, Merriam, Mission, De Soto, North Kansas
City, Fairway, Mission Hills, Westwood, Lake Quivira, Westwood
Hills, Mission Woods and Countryside.
This includes the following streams and drainages...
Mill Creek, Cedar Creek, Indian Creek, Clear Creek, Camp Creek,
Little Mill Creek, Coon Creek, Round Grove Creek, Missouri River,
Turkey Creek, Spoon Creek, Captain Creek, Dyke Branch, Kansas
River, Blue River, Kill Creek, Brush Creek, Rock Creek and Little
Cedar Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3915 9453 3914 9448 3907 9449 3901 9451
3890 9473 3881 9506 3893 9506 3902 9479
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR
$$
Kurtz156
WGUS73 KEAX 170523
FFSEAX
Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
1223 AM CDT Mon May 17 2021
KSC091-170533-
/O.CAN.KEAX.FF.W.0004.000000T0000Z-210517T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Johnson KS KS-
1223 AM CDT Mon May 17 2021
...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL JOHNSON KS COUNTY...
Flooding is no longer expected to pose a threat. Please continue to
heed remaining road closures.
LAT...LON 3904 9474 3911 9461 3911 9459 3913 9455
3915 9453 3915 9452 3914 9448 3907 9449
3901 9451 3896 9461 3904 9461
$$
KSC209-MOC095-170530-
/O.CON.KEAX.FF.W.0004.000000T0000Z-210517T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wyandotte KS-Jackson MO-
1223 AM CDT Mon May 17 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT EARLY
THIS MORNING FOR EAST CENTRAL WYANDOTTE AND WEST CENTRAL JACKSON
COUNTIES...
At 1223 AM CDT, Doppler radar and automated rain gauges indicated
thunderstorms producing heavy rain in Public reports of flowing
water over roadways in several locations near Brush Creek along the
state line. Between 3 and 4 inches of rain have fallen. The expected
rainfall rate is 0.5 to 1 inch in 1 hour. Additional rainfall
amounts of 0.5 to 1 inch are possible in the warned area. Flash
flooding is already occurring.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar and automated gauges.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Kansas City, Overland Park, Shawnee, Leawood, Prairie Village,
Merriam, Mission, North Kansas City, Mission Hills, Westwood,
Westwood Hills, Mission Woods and Roeland Park.
This includes the following streams and drainages...
Mill Creek, Missouri River, Dyke Branch, Round Grove Creek, Kansas
River, Blue River and Brush Creek.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3904 9474 3911 9461 3911 9459 3913 9455
3915 9453 3915 9452 3914 9448 3907 9449
3901 9451 3896 9461 3904 9461
FLASH FLOOD...RADAR AND GAUGE INDICATED
EXPECTED RAINFALL...0.5-1 INCH IN 1 HOUR
$$
73190
WGUS73 KEAX 170531
FFSEAX
Flash Flood Statement
National Weather Service Kansas City/Pleasant Hill MO
1231 AM CDT Mon May 17 2021
KSC209-MOC095-170541-
/O.EXP.KEAX.FF.W.0004.000000T0000Z-210517T0530Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Wyandotte KS-Jackson MO-
1231 AM CDT Mon May 17 2021
...FLASH FLOOD WARNING HAS EXPIRED FOR EAST CENTRAL WYANDOTTE AND
WEST CENTRAL JACKSON COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3904 9474 3911 9461 3911 9459 3913 9455
3915 9453 3915 9452 3914 9448 3907 9449
3901 9451 3896 9461 3904 9461
$$
73The office that day
Everything else NWS Kansas City, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 3:24 PM CDT | River Flood Warning | EAX | Atchison, Leavenworth | 22 hr |
| May 16, 5:36 PM CDT | Areal Flood Advisory | EAX | Johnson, Leavenworth, Wyandotte | 6 hr |
| May 15, 9:25 PM CDT | River Flood Warning | EAX | Cass, Henry, Johnson | 5 days |
| May 16, 3:35 PM CDT | Severe Thunderstorm Warning | EAX | Cooper | 27 min |
| May 16, 6:35 PM CDT | River Flood Warning | EAX | Jackson | 10 hr |
| May 16, 6:35 PM CDT | River Flood Warning | EAX | Carroll | 24 hr |
| May 16, 6:35 PM CDT | River Flood Warning | EAX | Cooper, Saline | 7 days |
Nearby
Flash Flood Warnings in Kansas, 2021Flash Flood Warnings in Missouri, 2021Every flash flood warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.