Alert archive / Illinois / Flash Flood Warnings in 2014

Flash Flood Warning 13, NWS St. Louis, MO

June 11, 2014Greene County, Illinois

NWS St. Louis, MO issued this flash flood warning at Jun 11, 2014, 1:02 AM CDT for Greene County, Illinois. It was in force for 8 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: Jun 11, 2014, 1:02 AM CDT (06:02 UTC)
Expired: Jun 11, 2014, 9:00 AM CDT
In force: 8 hr
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Flood severity: None

County Greene County, IL

The radar

The St Louis radar (KLSX), 75 km from the middle of the area, began a volume at 06:02 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
Jun 11, 5:15 AM CDT	FLASH FLOOD	Hillview, IL	TOWN OF HILLVIEW ISOLATED AS ROADS TRAVELLING INTO TOWN ARE ALL IMPASSIBLE DUE TO FLOODING FROM HURRICANE CREEK. MOST HOMES ALSO HAVE WATER IN THEM.

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

The nearest sounding before it

Lincoln, IL (KILX), launched 00:00Z, 6.0 hours before the alert went out and 174 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: 95 J/kg
Mixed-layer CIN: -25 J/kg
Mixed-layer LCL: 669 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 65 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

692 
WGUS53 KLSX 110602
FFWLSX
ILC061-111400-
/O.NEW.KLSX.FF.W.0013.140611T0602Z-140611T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE ST LOUIS MO
102 AM CDT WED JUN 11 2014

THE NATIONAL WEATHER SERVICE IN ST LOUIS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GREENE COUNTY IN SOUTHWEST ILLINOIS...

* UNTIL 900 AM CDT

* AT 101 AM CDT...A VERY SLOW MOVING AREA OF HEAVY RAIN IS OCCURRING
OVER NORTHERN GREENE COUNTY. RAINFALL ESTIMATES OVER THE PAST HOUR
ARE ON THE ORDER OF ONE TO TWO INCHES. ADDITIONAL HEAVY RAINFALL IS LIKELY
OVER THE NEXT COUPLE OF HOURS.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...WHITE
  HALL...ATHENSVILLE...CARROLLTON...GREENFIELD...OLD KANE AND
  ROODHOUSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.

TO REPORT FLOODING...HAVE THE NEAREST LAW ENFORCEMENT AGENCY RELAY
YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN ST
LOUIS.

&&

LAT...LON 3928 9016 3926 9018 3926 9021 3924 9020
      3923 9021 3923 9031 3918 9032 3918 9044
      3932 9059 3950 9059 3952 9058 3952 9015

$$

GOSSELIN

The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 10, 7:22 PM CDT	Flash Flood Warning	LSX	Macoupin	6 hr
Jun 10, 9:07 PM CDT	River Flood Warning	LSX	Jersey	52 hr
Jun 11, 12:39 AM CDT	Areal Flood Advisory	LSX	Calhoun, Greene, Jersey, Pike	9 hr
Jun 11, 1:29 AM CDT	Flash Flood Warning	LSX	Macoupin	8 hr
Jun 11, 8:56 AM CDT	Areal Flood Warning	LSX	Greene	10 hr
Jun 11, 11:47 AM CDT	River Flood Warning	LSX	Jackson, Randolph	5 days
Jun 11, 11:58 AM CDT	River Flood Warning	LSX	Calhoun, Greene, Jersey	5 days

Nearby

Flash Flood Warnings in Illinois, 2014 Every flash flood warning in 2014

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.