Alert archive / Missouri / River Flood Warnings in 2020

River Flood Warning 57, NWS Kansas City, MO

April 29, 2020Johnson County, Pettis County, Missouri

NWS Kansas City, MO issued this river flood warning at Apr 29, 2020, 2:07 AM CDT for Johnson County, Pettis County, Missouri. It took effect at Apr 29, 2020, 2:53 AM CDT. It was in force for 30 hr.

The area

The counties it named.

The facts

Issued: Apr 29, 2020, 2:07 AM CDT (07:07 UTC)
In effect from: Apr 29, 2020, 2:53 AM CDT
Expired: Apr 30, 2020, 8:37 AM CDT
In force: 30 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: Minor

Counties Johnson County, MO, Pettis County, MO

The radar

The Pleasant Hill radar (KEAX), 63 km from the middle of the area, began a volume at 07:11 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 river

Written for the forecast point Blackwater River near Valley City (VLYM7).

Action stage: 17 ft
Minor stage: 22 ft
Moderate stage: 25 ft
Major stage: 31 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 06907700, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Apr 29, 12:06 AM CDT, 2 hours 1 minute earlier.

Area forecast discussion, Apr 29, 12:06 AM CDT, 2 hours 1 minute before

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Hazardous weather outlook, Apr 28, 4:29 AM CDT, 21 hours 38 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
429 AM CDT Tue Apr 28 2020

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-290930-
Atchison KS-Miami-Linn KS-Doniphan-Leavenworth-Wyandotte-Johnson KS-
Atchison MO-Nodaway-Worth-Gentry-Harrison-Mercer-Putnam-Schuyler-
Holt-Andrew-De Kalb-Daviess-Grundy-Sullivan-Adair-Buchanan-Clinton-
Caldwell-Livingston-Linn MO-Macon-Platte-Clay-Ray-Carroll-Chariton-
Randolph-Jackson-Lafayette-Saline-Howard-Cass-Johnson MO-Pettis-
Cooper-Bates-Henry-
429 AM CDT Tue Apr 28 2020

This hazardous weather outlook is for northwest...north central and
west central Missouri...as well as extreme eastern Kansas.

.DAY ONE...Today and Tonight

 Severe thunderstorms are possible this afternoon.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

 Several chance for thunderstorms are possible Saturday through
 Monday. The chances of severe weather look low at this time.

 More detailed information can be accessed at...
 https://www.weather.gov/eax/hwo

In the hours before

Special weather statement, Apr 28, 8:13 PM CDT, 5 hours 54 minutes before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
813 PM CDT Tue Apr 28 2020

KSZ025-102>105-MOZ001>005-011>013-020-021-028-029-290215-
Wyandotte KS-Leavenworth KS-Johnson KS-Doniphan KS-Atchison KS-
Buchanan MO-Gentry MO-Nodaway MO-Harrison MO-Andrew MO-Clay MO-
Platte MO-Atchison MO-Clinton MO-De Kalb MO-Worth MO-Holt MO-
813 PM CDT Tue Apr 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR LEAVENWORTH...ATCHISON...
NORTHWESTERN WYANDOTTE...DONIPHAN...NORTHWESTERN JOHNSON...
BUCHANAN...HOLT...NODAWAY...ANDREW...WORTH...NORTHWESTERN CLAY...
WESTERN CLINTON...GENTRY...ATCHISON...PLATTE AND WESTERN DEKALB
COUNTIES UNTIL 915 PM CDT...

At 811 PM CDT, Doppler Radar was tracking strong northwest winds
from showers as well as a frontal boundary that could gust up to 55
mph. It is possible you may hear no thunder and have little to no
rain with these strong winds.

Locations impacted include...
St. Joseph, Shawnee, Leavenworth, Maryville, Lansing, Atchison,
Smithville, Bonner Springs, De Soto, Parkville, Savannah, Tonganoxie,
Platte City, Basehor, Edwardsville, Plattsburg, Albany, Weatherby
Lake, Weston and Tarkio.

This includes the following highways...
 Interstate 70 in Kansas between mile markers 410 and 411.
 Interstate 29 between mile markers 10 and 123.
 Interstate 435 between mile markers 13 and 37.
 Interstate 229 between mile markers 0 and 14.
 Kansas Turnpike between mile markers 206 and 226.

LAT...LON 4057 9418 3942 9453 3885 9505 3898 9506
      3897 9519 3942 9518 3942 9557 3965 9557
      3965 9534 4000 9531 4004 9542 4012 9539
      4018 9548 4024 9547 4031 9566 4046 9564
      4048 9570 4054 9565 4052 9575 4058 9577
TIME...MOT...LOC 0111Z 285DEG 41KT 4074 9518 3974 9556 3883 9614

Grana

Special weather statement, Apr 28, 9:07 PM CDT, 5 hours before

Special Weather Statement
National Weather Service Kansas City/Pleasant Hill MO
907 PM CDT Tue Apr 28 2020

KSZ025-057-060-102>105-MOZ004-011>014-020>022-028>030-037-038-043-
053-290300-
Wyandotte KS-Miami KS-Leavenworth KS-Johnson KS-Doniphan KS-
Atchison KS-Linn KS-Bates MO-Buchanan MO-Cass MO-Ray MO-Gentry MO-
Andrew MO-Clay MO-Platte MO-Clinton MO-Lafayette MO-Daviess MO-
De Kalb MO-Holt MO-Jackson MO-Caldwell MO-
907 PM CDT Tue Apr 28 2020

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN LINN...LEAVENWORTH...
ATCHISON...WYANDOTTE...MIAMI...DONIPHAN...JOHNSON...BUCHANAN...
SOUTHEASTERN HOLT...ANDREW...JACKSON...CASS...DAVIESS...NORTHWESTERN
BATES...CLAY...CLINTON...SOUTHERN GENTRY...RAY...CALDWELL...
SOUTHWESTERN LAFAYETTE...PLATTE AND DEKALB COUNTIES UNTIL 1000 PM
CDT...

At 905 PM CDT, Doppler Radar was tracking strong northwest winds
from showers as well as a frontal boundary that could gust up to 55
mph with isolated higher gusts. It is possible you may hear no
thunder and have little to no rain with these strong winds.

Locations impacted include...
Kansas City, Overland Park, Olathe, Independence, Lee's Summit, St.
Joseph, Shawnee, Blue Springs, Lenexa, Leavenworth, Leawood, Raytown,
Liberty, Gladstone, Grandview, Belton, Prairie Village, Raymore,
Gardner and Grain Valley.

This includes the following highways...
 Interstate 70 in Missouri between mile markers 0 and 33.
 Interstate 70 in Kansas between mile markers 410 and 423.
 Interstate 35 in Missouri between mile markers 0 and 76.
 Interstate 35 in Kansas between mile markers 200 and 235.
 Interstate 29 between mile markers 0 and 76.
 Interstate 635 between mile markers 0 and 12.
 Interstate 470 between mile markers 0 and 16.
 Interstate 435 between mile markers 0 and 83.
 Interstate 229 between mile markers 0 and 14.
 Kansas Turnpike between mile markers 206 and 226.

LAT...LON 3965 9557 3965 9534 4000 9534 4013 9493
      4003 9376 3893 9406 3891 9411 3875 9412
      3826 9429 3835 9507 3898 9506 3899 9507
      3896 9508 3897 9519 3942 9518 3942 9557
TIME...MOT...LOC 0205Z 299DEG 40KT 4067 9446 3943 9494 3850 9545

Grana

Local storm report, Apr 28, 9:13 PM CDT, 4 hours 54 minutes before

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Local storm report, Apr 28, 9:57 PM CDT, 4 hours 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 28, 8:01 PM CDT	River Flood Warning	EAX	Cooper	22 hr
Apr 28, 8:13 PM CDT	Special Weather Statement	EAX	Andrew, Atchison, Buchanan, DeKalb, Gentry, Holt and 3 more	62 min
Apr 28, 9:07 PM CDT	Special Weather Statement	EAX	Andrew, Buchanan, Caldwell, Cass, Clay, Clinton and 5 more	53 min
Apr 28, 9:09 PM CDT	High Wind Warning	EAX	Buchanan, Cass, Clay, Clinton, Jackson, Platte	116 min
Apr 29, 3:19 AM CDT	Wind Advisory	EAX	Andrew, Atchison, Bates, Buchanan, Caldwell, Carroll and 21 more	16 hr

Nearby

River Flood Warnings in Missouri, 2020 Every river flood warning in 2020

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.