Alert archive / Missouri / Areal Flood Warnings in 2020

Areal Flood Warning 13, NWS Kansas City, MO

July 15, 2020Macon County, Randolph County, Missouri

NWS Kansas City, MO issued this areal flood warning at Jul 15, 2020, 8:38 AM CDT for Macon County, Randolph County, Missouri. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 15, 2020, 8:38 AM CDT (13:38 UTC)
Expired
Jul 15, 2020, 11:30 AM CDT
In force
3 hr
Issued by
NWS Kansas City, MO
Area
Storm-based polygon
Flood severity
None

Counties Macon County, MO, Randolph County, MO

The radar

The Pleasant Hill radar (KEAX), 175 km from the middle of the area, began a volume at 13:41 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

Davenport, (KDVN), launched 12:00Z, 1.6 hours before the alert went out and 279 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, Davenport, at 12:00Z on 2020-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 205 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 12:00Z on 2020-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -22 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
205 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
905 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-22 m²/s²
0-3 km storm-relative helicity
-127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal 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 areal flood warning went out at Jul 15, 6:37 AM CDT, 2 hours 1 minute earlier.

Area forecast discussion, Jul 15, 6:37 AM CDT, 2 hours 1 minute before
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Hazardous weather outlook, Jul 15, 4:59 AM CDT, 3 hours 39 minutes before
Hazardous Weather Outlook
National Weather Service Kansas City/Pleasant Hill MO
459 AM CDT Wed Jul 15 2020

KSZ025-057-060-102>105-MOZ001>008-011>017-020>025-028>033-037>040-
043>046-053-054-161000-
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-
459 AM CDT Wed Jul 15 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

 Heavy rainfall associated with a complex of showers and
 thunderstorms is expected Wednesday morning. Primary impacts
 include heavy rain and flash flooding. Gusty winds are also likely.

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

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday

 Dangerous heat is expected Friday through the weekend. Highs
 anticipated around 95F with heat indicies near 105F

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

In the hours before

Local storm report, Jul 15, 3:50 AM CDT, 4 hours 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
350 AM CDT WED JUL 15 2020

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

0339 AM     FLASH FLOOD      1 W GUILFORD            40.17N 94.76W
07/15/2020                   NODAWAY            MO   LAW ENFORCEMENT

            REPORT OF SEVERAL INCHES OF WATER FLOWING
            OVER HWY M WEST OF GUILFORD.

&&

PP

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 12:19 AM CDTSpecial Weather StatementEAXHarrison26 min
Jul 15, 1:02 AM CDTSpecial Weather StatementEAXGentry28 min
Jul 15, 1:25 AM CDTSpecial Weather StatementEAXAdair, Schuyler50 min
Jul 15, 1:36 AM CDTFlash Flood WarningEAXAndrew, Gentry, Harrison, Nodaway, Worth9 hr
Jul 15, 4:11 AM CDTFlash Flood WarningEAXHolt5 hr
Jul 15, 4:51 AM CDTFlash Flood WarningEAXMacon4 hr
Jul 15, 5:21 AM CDTRiver Flood WarningEAXAndrew, Buchanan9 hr
Jul 15, 6:13 AM CDTFlash Flood WarningEAXClay, Clinton, Platte3 hr
Jul 15, 6:50 AM CDTRiver Flood WarningEAXClay, Ray11 hr
Jul 15, 6:50 AM CDTRiver Flood WarningEAXClay, Platte5 hr
Jul 15, 8:22 AM CDTRiver Flood WarningEAXBuchanan25 hr
Jul 15, 10:22 AM CDTAreal Flood WarningEAXAndrew, Gentry, Harrison, Nodaway, Worth3 hr

Nearby

Areal Flood Warnings in Missouri, 2020Every areal 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.