Alert archive / Illinois / Flash Flood Warnings in 2011

Flash Flood Warning 13, NWS Paducah, KY

April 23, 2011Perry County, Missouri; 4 counties in Illinois

NWS Paducah, KY issued this flash flood warning at Apr 23, 2011, 12:17 AM CDT for Perry County, Missouri; 4 counties in Illinois. It was in force for 6 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: Apr 23, 2011, 12:17 AM CDT (05:17 UTC)
Expired: Apr 23, 2011, 6:15 AM CDT
In force: 6 hr
Issued by: NWS Paducah, KY
Area: Storm-based polygon
Flood severity: None

Counties Franklin County, IL, Jackson County, IL, Perry County, IL, Williamson County, IL, Perry County, MO

The radar

The Paducah radar (KPAH), 110 km from the middle of the area, began a volume at 05:18 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
Apr 23, 2:08 AM CDT	FLASH FLOOD	Carbondale, IL	1 1/2 FEET OF WATER OVER WASHINGTON STREET. IT HAS BEEN CLOSED OFF TO ALL TRAFFIC.

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, 5.3 hours before the alert went out and 268 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: 342 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 492 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 351 m²/s²
0-3 km storm-relative helicity: 346 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.9

Open this sounding in Storm Lab

The text

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

583 
WGUS53 KPAH 230517
FFWPAH
ILC055-077-145-199-MOC157-231115-
/O.NEW.KPAH.FF.W.0013.110423T0517Z-110423T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PADUCAH KY
1217 AM CDT SAT APR 23 2011

THE NATIONAL WEATHER SERVICE IN PADUCAH HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  FRANKLIN COUNTY IN SOUTH CENTRAL ILLINOIS...
  PERRY COUNTY IN SOUTH CENTRAL ILLINOIS...
  PERRY COUNTY IN SOUTHEAST MISSOURI...
  JACKSON COUNTY IN SOUTHERN ILLINOIS...
  WILLIAMSON COUNTY IN SOUTHERN ILLINOIS...

* UNTIL 615 AM CDT.

* AT 1207 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED 
A SLOW MOVING LINE OF STORMS EXTENDING FROM PERRYVILLE MISSOURI EAST 
TOWARD BENTON AND WEST FRANKFORT ILLINOIS. THESE STORMS WERE MOVING 
EAST AND WILL REPEATEDLY PASS OVER THESE SAME AREAS FOR THE NEXT 
SEVERAL HOURS. RADAR ESTIMATES THAT BETWEEN ONE AND TWO INCHES OF 
RAIN HAS FALLEN IN THE LAST HOUR. RAINFALL RATES MAY APPROACH 
BETWEEN 2 AND 3 INCHES PER HOUR. ANOTHER 1 TO 2 INCHES IS POSSIBLE 
THROUGH THE EARLY MORNING HOURS.

* LOCATIONS IN THE WARNING INCLUDE...
  PERRYVILLE...
  DUQUOIN...
  CARBONDALE...
  BENTON...
  MARION...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3821 8916 3813 8914 3813 8871 3761 8872
      3761 8945 3757 8950 3757 8959 3760 8961
      3760 9015 3764 9015 3788 8993 3788 8989
      3791 8986 3781 8970 3784 8966 3795 8960
      3822 8959

$$

1 follow-up statement

658 
WGUS73 KPAH 230714
FFSPAH

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PADUCAH KY
214 AM CDT SAT APR 23 2011

ILC055-077-145-199-MOC157-231115-
/O.CON.KPAH.FF.W.0013.000000T0000Z-110423T1115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
WILLIAMSON IL-JACKSON IL-FRANKLIN IL-PERRY IL-PERRY MO-
214 AM CDT SAT APR 23 2011

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 AM CDT FOR PERRY
AND FRANKLIN COUNTIES IN SOUTH CENTRAL ILLINOIS...AND JACKSON AND
WILLIAMSON COUNTIES IN SOUTHERN ILLINOIS...AND PERRY COUNTY IN
SOUTHEAST MISSOURI...

AT 208 AM CDT...CARBONDALE EMERGENCY MANAGEMENT OFFICIALS REPORTED 1 
AND HALF FEET OF WATER OVER WASHINGTON STREET IN CARBONDALE. THIS 
STREET HAS BEEN CLOSED TO TRAFFIC. AT 211 AM CDT...RADAR INDICATED 
SHOWERS AND THUNDERSTORMS CONTINUED TO STRETCH ACROSS THE WARNED 
AREA...WITH THE HEAVIEST RAIN AROUND AND SOUTH OF MURPHYSBORO... 
CARBONDALE AND MARION ILLINOIS. ADDITIONAL RAINFALL OF 1/2 TO 1 INCH 
OR MORE PER HOUR CAN BE EXPECTED IN THE WARNED AREA THROUGH THE 
EARLY MORNING HOURS.  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

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.

&&

LAT...LON 3821 8916 3813 8914 3813 8871 3761 8872
      3761 8945 3757 8950 3757 8959 3760 8961
      3760 9015 3764 9015 3788 8993 3788 8989
      3791 8986 3781 8970 3784 8966 3795 8960
      3822 8959

$$
SHANKLIN

The office that day

Everything else NWS Paducah, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 22, 7:23 PM CDT	Tornado Warning	PAH	Carter	37 min
Apr 22, 7:54 PM CDT	Severe Thunderstorm Warning	PAH	Butler, Carter, Wayne	28 min
Apr 22, 7:57 PM CDT	Flash Flood Warning	PAH	Bollinger, Carter, Wayne	3 hr
Apr 22, 8:14 PM CDT	Tornado Warning	PAH	Bollinger, Stoddard, Wayne	35 min
Apr 22, 8:30 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Cape Girardeau, Scott, Stoddard	45 min
Apr 22, 8:39 PM CDT	Tornado Warning	PAH	Bollinger, Cape Girardeau, Scott, Stoddard	51 min
Apr 22, 9:07 PM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Butler, Carter, Ripley, Stoddard, Wayne	38 min
Apr 22, 9:17 PM CDT	Severe Thunderstorm Warning	PAH	Mississippi, Scott	43 min
Apr 22, 9:19 PM CDT	Flash Flood Warning	PAH	Bollinger, Butler, Cape Girardeau, Mississippi, New Madrid, Scott and 1 more	3 hr
Apr 22, 9:29 PM CDT	Tornado Warning	PAH	Butler, Stoddard, Wayne	30 min
Apr 23, 12:55 AM CDT	Severe Thunderstorm Warning	PAH	Bollinger, Cape Girardeau, Perry	50 min
Apr 23, 2:02 AM CDT	Areal Flood Advisory	PAH	Bollinger, Cape Girardeau, Wayne	3 hr
Apr 23, 9:29 AM CDT	River Flood Warning	PAH	Ripley	7 days
Apr 23, 9:30 AM CDT	River Flood Warning	PAH	Butler	7 days
Apr 23, 9:31 AM CDT	River Flood Warning	PAH	Wayne	28 days
Apr 23, 12:56 PM CDT	Areal Flood Advisory	PAH	Bollinger, Butler, Stoddard, Wayne	3 hr
Apr 23, 1:42 PM CDT	Areal Flood Advisory	PAH	Cape Girardeau, Mississippi, New Madrid, Scott	3 hr
Apr 23, 2:27 PM CDT	Severe Thunderstorm Warning	PAH	Mississippi	6 min
Apr 23, 5:13 PM CDT	Areal Flood Advisory	PAH	Bollinger, Butler, Cape Girardeau, Mississippi, New Madrid, Scott and 2 more	4 hr
Apr 22, 9:23 PM CDT	Severe Thunderstorm Warning	PAH	Gallatin, White	15 min
Apr 22, 9:38 PM CDT	Tornado Warning	PAH	Massac, Pope, Pulaski	35 min
Apr 22, 10:08 PM CDT	Severe Thunderstorm Warning	PAH	Gallatin, Hardin, Massac, Pope	22 min
Apr 22, 10:31 PM CDT	Areal Flood Advisory	PAH	Gallatin, Hardin, Johnson, Massac, Pope, Saline and 1 more	6 hr
Apr 22, 11:02 PM CDT	Flash Flood Warning	PAH	Jefferson	6 hr
Apr 23, 12:44 AM CDT	Severe Thunderstorm Warning	PAH	White	31 min
Apr 23, 4:27 AM CDT	Areal Flood Advisory	PAH	Gallatin, Hamilton, Hardin, Johnson, Massac, Pope and 4 more	3 hr
Apr 23, 6:27 AM CDT	Flash Flood Warning	PAH	Hardin	4 hr
Apr 23, 11:18 AM CDT	Areal Flood Advisory	PAH	Edwards, Franklin, Hamilton, Jefferson, Perry, Wabash and 2 more	3 hr
Apr 23, 12:35 PM CDT	Flash Flood Warning	PAH	Edwards, Gallatin, Wabash, White	6 hr
Apr 23, 2:20 PM CDT	Tornado Warning	PAH	Alexander, Massac, Pulaski	25 min
Apr 23, 2:46 PM CDT	Severe Thunderstorm Warning	PAH	Massac, Pope	29 min
Apr 23, 2:50 PM CDT	Tornado Warning	PAH	Massac, Pope	25 min
Apr 23, 3:12 PM CDT	Severe Thunderstorm Warning	PAH	Hardin, Pope	33 min
Apr 23, 3:34 PM CDT	Severe Thunderstorm Warning	PAH	Hardin	41 min

Nearby

Flash Flood Warnings in Illinois, 2011 Flash Flood Warnings in Missouri, 2011 Every flash flood warning in 2011

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.