Alert archive / Missouri / Areal Flood Warnings in 2016

Areal Flood Warning 21, NWS Kansas City, MO

July 18, 2016Atchison County, Missouri

NWS Kansas City, MO issued this areal flood warning at Jul 18, 2016, 11:35 AM CDT for Atchison County, Missouri. It was in force for 3 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: Jul 18, 2016, 11:35 AM CDT (16:35 UTC)
Expired: Jul 18, 2016, 2:30 PM CDT
In force: 3 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

County Atchison County, MO

The radar

The Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 16:35 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
Jul 18, 1:10 PM CDT	FLOOD	2 W Westboro, MO	WATER REPORTED IN SEVERAL LOCATIONS OVER HIGHWAY 59 NEAR WESTBORO.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 4.6 hours before the alert went out and 110 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 177 J/kg
Mixed-layer CIN: -266 J/kg
Mixed-layer LCL: 1050 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 153 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

As transmitted.

378 
WGUS43 KEAX 181635
FLWEAX

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE KANSAS CITY/PLEASANT HILL MO
1135 AM CDT MON JUL 18 2016

MOC005-181930-
/O.NEW.KEAX.FA.W.0021.160718T1635Z-160718T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATCHISON MO-
1135 AM CDT MON JUL 18 2016

THE NATIONAL WEATHER SERVICE IN PLEASANT HILL HAS ISSUED A

* FLOOD WARNING FOR...
  NORTHERN ATCHISON COUNTY IN NORTHWESTERN MISSOURI...

* UNTIL 230 PM CDT

* AT 1134 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
  HEAVY RAIN WHICH WILL CAUSE FLOODING. UP TO THREE INCHES OF RAIN
  HAVE ALREADY FALLEN THIS MORNING...WITH ANOTHER ONE INCH EXPECTED
  FROM ONGOING THUNDERSTORMS. 

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  TARKIO...ROCKPORT...WESTBORO...WATSON AND BLANCHARD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 4058 9577 4058 9520 4039 9518 4042 9566
      4046 9564 4046 9568 4048 9570 4049 9568
      4051 9569 4052 9566 4054 9565 4056 9568
      4052 9571 4052 9575

$$

BLAIR

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 18, 2:22 AM CDT	Special Weather Statement	EAX	Gentry, Nodaway, Worth	38 min
Jul 18, 3:15 AM CDT	Areal Flood Advisory	EAX	Nodaway	3 hr
Jul 18, 8:03 AM CDT	Areal Flood Warning	EAX	Gentry, Nodaway, Worth	6 hr
Jul 18, 9:23 AM CDT	Excessive Heat Warning	EAX	Adair, Andrew, Atchison, Bates, Buchanan, Caldwell and 31 more	6 days
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Andrew, Nodaway	59 hr
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Andrew, Buchanan	3 days
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Andrew, Holt, Nodaway	40 hr
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Buchanan	4 days
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Platte	5 days
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Platte	5 days
Jul 18, 9:30 AM CDT	River Flood Warning	EAX	Atchison, Holt	50 hr
Jul 18, 2:26 PM CDT	Areal Flood Warning	EAX	Atchison	3 hr

Nearby

Areal Flood Warnings in Missouri, 2016 Every areal flood warning in 2016

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.