Alert archive / Missouri / River Flood Warnings in 2020

River Flood Warning 159, NWS Kansas City, MO

July 30, 2020Johnson County, Pettis County, Missouri

NWS Kansas City, MO issued this river flood warning at Jul 30, 2020, 11:34 PM CDT for Johnson County, Pettis County, Missouri. It took effect at Jul 31, 2020, 12:29 AM CDT. It was in force for 3 days.

The area

The counties it named.

The facts

Issued: Jul 30, 2020, 11:34 PM CDT (04:34 UTC)
In effect from: Jul 31, 2020, 12:29 AM CDT
Expired: Aug 3, 2020, 5:22 AM CDT
In force: 3 days
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: Moderate

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 04:38 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 Jul 30, 11:21 PM CDT, 13 minutes earlier.

Area forecast discussion, Jul 30, 11:21 PM CDT, 13 minutes before

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Hazardous weather outlook, Jul 30, 4:50 AM CDT, 18 hours 44 minutes before

Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
450 AM CDT Thu Jul 30 2020

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-311000-
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-
450 AM CDT Thu Jul 30 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

Moderate to heavy rainfall chances will continue through today. Areas
of one to two inches of rain is expected, with locally higher
amounts, greater than three inches possible. The best chance for
bouts of heavy rainfall will be for locations along and south of the
Missouri River. This additional rainfall will continue to support
flooding and flash flooding concerns through the day.

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

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Off and on thunderstorm chances will persist through Friday. Isolated
instances of flooding and flash flooding will continue.

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

In the hours before

Local storm report, Jul 30, 8:30 PM CDT, 3 hours 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
830 PM CDT THU JUL 30 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0800 PM     FLASH FLOOD      1 S KING CITY           40.04N 94.53W
07/30/2020                   GENTRY             MO   LAW ENFORCEMENT

            169 HWY SOUTH OF KING CITY CLOSED DUE TO
            WATER OVER THE ROAD.

&&

Local storm report, Jul 30, 8:47 PM CDT, 2 hours 47 minutes before

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Local storm report, Jul 30, 8:51 PM CDT, 2 hours 43 minutes before

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Local storm report, Jul 30, 9:42 PM CDT, 1 hour 52 minutes before

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Local storm report, Jul 30, 10:19 PM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1019 PM CDT THU JUL 30 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     FLASH FLOOD      1 NW HILLSDALE          38.67N 94.86W
07/30/2020                   MIAMI              KS   PUBLIC

            NORMALLY DRY CREEK BED FLASH FLOODING.
            DELAYED REPORT. REPORT VIA SOCIAL MEDIA.

&&

PP

Local storm report, Jul 30, 10:37 PM CDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1037 PM CDT THU JUL 30 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1036 PM     FLOOD            6 S CONCORDIA           38.89N 93.56W
07/30/2020                   JOHNSON            MO   PUBLIC

            NUMEROUS ROADS NEAR THE BLACK WATER RIVER
            ALONG HWY 23 ARE FLOODED. REPORT VIA SOCIAL
            MEDIA.

&&

PP

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 30, 7:12 PM CDT	Flash Flood Warning	EAX	Carroll, Lafayette, Ray, Saline	5 hr
Jul 30, 7:48 PM CDT	River Flood Warning	EAX	Platte	50 hr
Jul 30, 7:48 PM CDT	River Flood Warning	EAX	Platte	4 days
Jul 30, 8:24 PM CDT	Areal Flood Warning	EAX	Henry, Johnson, Lafayette, Pettis, Saline	3 hr
Jul 30, 8:37 PM CDT	Flash Flood Warning	EAX	Cass, Henry, Jackson, Johnson, Lafayette, Pettis and 1 more	8 hr
Jul 30, 8:50 PM CDT	River Flood Warning	EAX	Clay, Jackson, Ray	3 days
Jul 30, 9:05 PM CDT	Areal Flood Warning	EAX	Holt	6 hr
Jul 30, 9:54 PM CDT	Areal Flood Warning	EAX	Andrew, Buchanan, Holt	9 hr
Jul 31, 12:08 AM CDT	Areal Flood Warning	EAX	Carroll, Lafayette, Ray, Saline	3 days
Jul 31, 3:43 AM CDT	Flash Flood Warning	EAX	Henry	7 hr
Jul 31, 3:46 AM CDT	River Flood Warning	EAX	Jackson	30 hr
Jul 31, 4:10 AM CDT	River Flood Warning	EAX	Bates, Cass, Henry	38 hr
Jul 31, 4:18 AM CDT	Areal Flood Warning	EAX	Johnson, Lafayette, Pettis, Saline	3 days
Jul 31, 7:50 AM CDT	Areal Flood Warning	EAX	Jackson	6 hr
Jul 31, 10:11 AM CDT	River Flood Warning	EAX	Chariton, Howard, Saline	3 days
Jul 31, 10:11 AM CDT	River Flood Warning	EAX	Cooper, Howard	4 days
Jul 31, 10:43 AM CDT	Areal Flood Warning	EAX	Henry	24 hr
Jul 31, 1:45 PM CDT	Areal Flood Warning	EAX	Jackson	12 hr
Jul 30, 7:08 PM CDT	Areal Flood Warning	EAX	Linn, Miami	12 hr
Jul 30, 8:50 PM CDT	River Flood Warning	EAX	Atchison, Leavenworth	21 hr
Jul 30, 8:55 PM CDT	Areal Flood Warning	EAX	Johnson, Leavenworth, Wyandotte	6 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.