Alert archive / Missouri / Flash Flood Warnings in 2017

Flash Flood Warning 29, NWS Kansas City, MO

August 5, 2017Henry County, Missouri

NWS Kansas City, MO issued this flash flood warning at Aug 5, 2017, 10:44 PM CDT for Henry County, Missouri. It was in force for 4 hr. 2 reports 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: Aug 5, 2017, 10:44 PM CDT (03:44 UTC)
Expired: Aug 6, 2017, 2:45 AM CDT
In force: 4 hr
Issued by: NWS Kansas City, MO
Area: Storm-based polygon
Flood severity: None

County Henry County, MO

The radar

The Pleasant Hill radar (KEAX), 72 km from the middle of the area, began a volume at 03:47 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
Aug 5, 11:30 PM CDT	FLASH FLOOD	Clinton, MO	DELAYED REPORT...MULTIPLE ROADWAYS WITHIN CLINTON SUBMERGED AND CLOSED DUE TO IMPASSABLE CONDITIONS.
Aug 5, 11:30 PM CDT	FLASH FLOOD	Windsor, MO	DELAYED REPORT...VEHICLE SUBMERGED WITHIN CITY LIMITS OF WINDSOR.

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 00:00Z, 3.7 hours before the alert went out and 156 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 992 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 324 m²/s²
0-3 km storm-relative helicity: 495 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted.

964 
WGUS53 KEAX 060344
FFWEAX
MOC083-060745-
/O.NEW.KEAX.FF.W.0029.170806T0344Z-170806T0745Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Kansas City/Pleasant Hill MO
1044 PM CDT SAT AUG 5 2017

The National Weather Service in Pleasant Hill has issued a

* Flash Flood Warning for...
  Henry County in west central Missouri...

* Until 245 AM CDT

* At 1042 PM CDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Up to two to three inches of 
  rain have already fallen. Flash flooding is expected to begin 
  shortly.

* Some locations that will experience flooding include...
  Clinton, Windsor, Urich, Calhoun, Deepwater, Montrose, Coal,
  Brownington, Blairstown, Tightwad, Hartwell, La Due and Truman
  Lake.

Additional rainfall amounts of one to two inches are possible in the 
warned area over the next several hours.

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.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 3822 9408 3857 9406 3856 9351 3821 9352
      3822 9356 3822 9357 3820 9356

$$

Welsh

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 7:14 PM CDT	Areal Flood Advisory	EAX	Clay, Jackson, Lafayette, Ray	4 hr
Aug 5, 8:01 PM CDT	Flash Flood Warning	EAX	Clay, Jackson, Lafayette, Platte, Ray	6 hr
Aug 5, 8:16 PM CDT	Flash Flood Warning	EAX	Johnson, Pettis	6 hr
Aug 5, 8:35 PM CDT	Areal Flood Advisory	EAX	Buchanan, Clay, Clinton, Platte	3 hr
Aug 5, 9:00 PM CDT	Flash Flood Warning	EAX	Cass, Jackson	7 hr
Aug 5, 9:07 PM CDT	Special Weather Statement	EAX	Jackson	38 min
Aug 5, 9:11 PM CDT	River Flood Warning	EAX	Ray	53 hr
Aug 5, 9:21 PM CDT	River Flood Warning	EAX	Jackson	43 hr
Aug 5, 9:23 PM CDT	River Flood Warning	EAX	Carroll, Lafayette, Saline	3 days
Aug 5, 9:23 PM CDT	River Flood Warning	EAX	Carroll, Chariton, Saline	3 days
Aug 5, 9:49 PM CDT	Special Weather Statement	EAX	Jackson	41 min
Aug 5, 10:24 PM CDT	River Flood Warning	EAX	Jackson	28 hr
Aug 5, 10:53 PM CDT	River Flood Warning	EAX	Jackson	31 hr
Aug 5, 10:59 PM CDT	River Flood Warning	EAX	Jackson	25 hr
Aug 5, 11:57 PM CDT	River Flood Warning	EAX	Jackson	27 hr
Aug 6, 1:55 AM CDT	Areal Flood Warning	EAX	Cass, Clay, Henry, Jackson, Johnson, Lafayette and 3 more	60 hr

Nearby

Flash Flood Warnings in Missouri, 2017 Every flash flood warning in 2017

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.