Alert archive / Illinois / Flash Flood Watches in 2011
Flash Flood Watch 7, NWS Paducah, KY
NWS Paducah, KY issued this flash flood watch at Nov 21, 2011, 4:12 AM CST for 15 counties in Kentucky; 19 counties in Illinois; 11 counties in Missouri. It took effect at Nov 21, 2011, 9:00 PM CST. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Nov 21, 2011, 4:12 AM CST (10:12 UTC)
- In effect from
- Nov 21, 2011, 9:00 PM CST
- Expired
- Nov 22, 2011, 7:58 AM CST
- In force
- 11 hr
- Issued by
- NWS Paducah, KY
- Flood severity
- None
All 45 counties
Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Daviess County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Livingston County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Union County, KY, Webster County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Mississippi County, MO, New Madrid County, MO, Perry County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 38 km from the middle of the area, began a volume at 10:13 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
Nashville Metro, TN (KBNA), launched 00:00Z, 10.2 hours before the alert went out and 248 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 0 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 213 m²/s²
- 0-3 km storm-relative helicity
- 259 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Paducah, KY wrote its last area forecast discussion before this flash flood watch went out at Nov 21, 3:08 AM CST, 1 hour 4 minutes earlier.
Area forecast discussion, Nov 21, 3:08 AM CST, 1 hour 4 minutes before
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HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE PADUCAH KY 353 PM CST SUN NOV 20 2011 ILZ075>078-080>094-INZ081-082-085>088-KYZ001>022-MOZ076-086-087- 100-107>112-114-211100- JEFFERSON-WAYNE IL-EDWARDS-WABASH-PERRY IL-FRANKLIN-HAMILTON- WHITE-JACKSON-WILLIAMSON-SALINE-GALLATIN-UNION IL-JOHNSON-POPE- HARDIN-ALEXANDER-PULASKI-MASSAC-GIBSON-PIKE-POSEY-VANDERBURGH- WARRICK-SPENCER-FULTON-HICKMAN-CARLISLE-BALLARD-MCCRACKEN-GRAVES- LIVINGSTON-MARSHALL-CALLOWAY-CRITTENDEN-LYON-TRIGG-CALDWELL- UNION KY-WEBSTER-HOPKINS-CHRISTIAN-HENDERSON-DAVIESS-MCLEAN- MUHLENBERG-TODD-PERRY MO-BOLLINGER-CAPE GIRARDEAU-WAYNE MO-CARTER- RIPLEY-BUTLER-STODDARD-SCOTT-MISSISSIPPI-NEW MADRID- 353 PM CST SUN NOV 20 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHERN ILLINOIS...SOUTHWEST INDIANA...WESTERN KENTUCKY AND SOUTHEAST MISSOURI. .DAY ONE...THIS AFTERNOON AND TONIGHT AN ISOLATED THUNDERSTORM IS POSSIBLE LATE THIS AFTERNOON AND THIS EVENING...MAINLY EAST OF THE MISSISSIPPI RIVER. SEVERE WEATHER IS NOT EXPECTED...BUT A BRIEF PERIOD OF HEAVY RAINFALL WILL BE POSSIBLE. WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS WILL SPREAD BACK OVER SOUTHEAST MISSOURI AND WEST KENTUCKY LATE TONIGHT. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE OVER SOUTHEAST MISSOURI...BUT SIGNIFICANT FLOODING ISSUES ARE NOT EXPECTED. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY WIDESPREAD SHOWERS AND ISOLATED THUNDERSTORMS WILL SPREAD EAST ACROSS WEST KENTUCKY MONDAY. LOCALLY HEAVY RAINFALL WILL BE POSSIBLE...ESPECIALLY NEAR THE TENNESSEE RIVER. GIVEN THE HEAVY RAINS FROM THIS MORNING...SOME NUISANCE FLOODING ISSUES WILL BE POSSIBLE. ANOTHER ROUND OF WIDESPREAD SHOWERS AND SCATTERED THUNDERSTORMS WILL SPREAD NORTHEAST ACROSS SOUTHEAST MISSOURI AND SOUTHERN ILLINOIS LATE MONDAY NIGHT INTO TUESDAY. A LARGE SWATH OF 1 TO 2 INCH RAINFALLS IS EXPECTED...WHICH MAY CAUSE SOME NUISANCE FLOODING ISSUES. GIVEN THAT THIS AREA HAS NOT RECEIVED MUCH RAINFALL TODAY...FLASH FLOODING IS NOT LIKELY MONDAY NIGHT AND TUESDAY. A COLD FRONT WILL SWEEP EASTWARD ACROSS THE ENTIRE AREA TUESDAY. A BAND OF SHOWERS AND THUNDERSTORMS WILL DEVELOP ALONG IT...BUT IT SHOULD TRANSLATE EASTWARD FAST ENOUGH TO PREVENT ANOTHER ROUND OF SIGNIFICANT HEAVY RAINFALL. A FEW SEVERE THUNDERSTORMS WILL BE POSSIBLE...ESPECIALLY ACROSS WEST KENTUCKY. A CHANCE OF THUNDERSTORMS IS FORECAST THROUGHOUT THE AREA FRIDAY NIGHT AND SATURDAY. SEVERE WEATHER IS NOT EXPECT AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUESTED TUESDAY OVER WEST KENTUCKY. SPOTTERS SHOULD ALSO RELAY ANY REPORTS OF HEAVY RAINFALL AND FLOODING LATE TONIGHT THROUGH TUESDAY. DRS
In the hours before
Special weather statement, Nov 21, 12:29 AM CST, 3 hours 43 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PADUCAH KY 1229 AM CST MON NOV 21 2011 ILZ090-094-KYZ004-005-007-008-210715- BALLARD KY-LIVINGSTON KY-MARSHALL KY-MASSAC IL-MCCRACKEN KY-POPE IL- 1229 AM CST MON NOV 21 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN POPE AND SOUTHEASTERN MASSAC COUNTIES IN SOUTHERN ILLINOIS...AND EASTERN BALLARD...NORTHWESTERN MARSHALL...MCCRACKEN AND SOUTHERN LIVINGSTON COUNTIES IN WESTERN KENTUCKY UNTIL 115 AM CST... AT 1226 AM CST...STORM SPOTTERS REPORTED A STRONG THUNDERSTORM 5 MILES WEST OF WEST PADUCAH...OR 7 MILES EAST OF LA CENTER...MOVING EAST AT 45 MPH. WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... METROPOLIS... LONE OAK... PADUCAH... REIDLAND... CALVERT CITY... WEST PADUCAH... BROOKPORT... LEDBETTER... HAMLETSBURG... SMITHLAND...
Local storm report, Nov 21, 12:33 AM CST, 3 hours 39 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
1233 AM CST MON NOV 21 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1216 AM HAIL UNIONTOWN 37.77N 87.93W
11/21/2011 E1.00 INCH UNION KY TRAINED SPOTTER
&&
DLLLocal storm report, Nov 21, 12:41 AM CST, 3 hours 31 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PADUCAH KY
1241 AM CST MON NOV 21 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1240 AM HAIL EVANSVILLE 37.98N 87.54W
11/21/2011 E0.75 INCH VANDERBURGH IN TRAINED SPOTTER
&&
DLLSpecial weather statement, Nov 21, 12:59 AM CST, 3 hours 13 minutes before
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</html>The office that day
Everything else NWS Paducah, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 12:45 AM CST | Severe Thunderstorm Warning | PAH | Daviess | 15 min |
| Nov 20, 11:20 PM CST | Severe Thunderstorm Warning | PAH | Johnson, Pope | 25 min |
| Nov 20, 11:44 PM CST | Severe Thunderstorm Warning | PAH | Hardin, Pope, Saline | 31 min |
Nearby
Flash Flood Watches in Illinois, 2011Flash Flood Watches in Kentucky, 2011Flash Flood Watches in Missouri, 2011Every flash flood watch 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.