Alert archive / Illinois / Flash Flood Watches in 2009
Flash Flood Watch 12, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood watch at Dec 24, 2009, 3:34 PM CST for Sangamon County, Illinois. It was in force for 53 hr.
The area
The counties it named.
The facts
- Issued
- Dec 24, 2009, 3:34 PM CST (21:34 UTC)
- Expired
- Dec 26, 2009, 8:32 PM CST
- In force
- 53 hr
- Issued by
- NWS Lincoln, IL
- Flood severity
- None
County Sangamon County, IL
The radar
The Lincoln radar (KILX), 52 km from the middle of the area, began a volume at 21:33 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
Springfield, MO (KSGF), launched 12:00Z, 9.6 hours before the alert went out and 481 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
- 5 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Lincoln, IL wrote its last area forecast discussion before this flash flood watch went out at Dec 24, 3:00 PM CST, 34 minutes earlier.
Area forecast discussion, Dec 24, 3:00 PM CST, 34 minutes before
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</html>Hazardous weather outlook, Dec 24, 2:43 PM CST, 51 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LINCOLN IL 243 PM CST THU DEC 24 2009 ILZ027>031-037-038-045-046-251200- CHAMPAIGN-KNOX-MARSHALL-MCLEAN-PEORIA-STARK-TAZEWELL-VERMILION- WOODFORD- 243 PM CST THU DEC 24 2009 ...FLOOD WATCH IN EFFECT UNTIL MIDNIGHT CST TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS AND EAST CENTRAL ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT PERIODS OF RAIN WILL CONTINUE ACROSS CENTRAL ILLINOIS THROUGH TONIGHT...WITH ADDITIONAL AMOUNTS OF RAIN OF A HALF TO 1 INCH WITH LOCALLY HIGHER AMOUNTS BY MIDNIGHT. THIS AMOUNT OF RAIN...FALLING ON A PARTIALLY FROZEN GROUND FROM I-74 NORTH...WILL LIKELY LEAD TO LOCALIZED FLOODING IN LOW LYING AND POOR DRAINAGE AREAS. PLEASE CONTINUE TO MONITOR LATER FORECASTS AND STATEMENTS INCLUDING RIVERS FOR MORE INFORMATION. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY AS THE SYSTEM PUSHES FURTHER NORTHEAST ON CHRISTMAS DAY...COLDER AIR WILL BE DRAWN INTO THE REGION...CAUSING LINGERING RAIN OR DRIZZLE TO CHANGE TO LIGHT SNOW OR FLURRIES. TEMPERATURES DROPPING BELOW FREEZING BY AFTERNOON CHRISTMAS DAY...COUPLED WITH THE FALLING SNOW...COULD PRODUCE HAZARDOUS DRIVING CONDITIONS ACROSS THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. ILZ036-040>044-047>057-061>063-066>068-071>073-251200- CASS-CHRISTIAN-CLARK-CLAY-COLES-CRAWFORD-CUMBERLAND-DE WITT- DOUGLAS-EDGAR-EFFINGHAM-FULTON-JASPER-LAWRENCE-LOGAN-MACON-MASON- MENARD-MORGAN-MOULTRIE-PIATT-RICHLAND-SANGAMON-SCHUYLER-SCOTT- SHELBY- 243 PM CST THU DEC 24 2009 ...FLOOD WATCH IN EFFECT UNTIL MIDNIGHT CST TONIGHT... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL ILLINOIS...EAST CENTRAL ILLINOIS AND SOUTHEAST ILLINOIS. .DAY ONE...THIS AFTERNOON AND TONIGHT PERIODS OF RAIN WILL CONTINUE ACROSS CENTRAL AND SOUTHEAST ILLINOIS THROUGH TONIGHT...WITH ADDITIONAL AMOUNTS OF RAIN BETWEEN A HALF AND 1 INCH BY MIDNIGHT WITH LOCALLY HIGHER AMOUNTS POSSIBLE. THIS AMOUNT OF RAIN WILL LIKELY LEAD TO LOCALIZED FLOODING IN LOW LYING AND POOR DRAINAGE AREAS. PLEASE CONTINUE TO MONITOR LATER FORECASTS AND STATEMENTS INCLUDING RIVERS FOR MORE INFORMATION. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY AS THE SYSTEM PUSHES FURTHER NORTHEAST ON CHRISTMAS DAY...COLDER AIR WILL BE DRAWN INTO THE REGION...CAUSING LINGERING RAIN OR DRIZZLE TO CHANGE TO LIGHT SNOW OR FLURRIES. TEMPERATURES DROPPING BELOW FREEZING BY AFTERNOON CHRISTMAS DAY...COUPLED WITH THE FALLING SNOW...COULD PRODUCE HAZARDOUS DRIVING CONDITIONS ACROSS THE AREA. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED THROUGH TONIGHT. KH
In the hours before
Local storm report, Dec 24, 9:41 AM CST, 5 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
941 AM CST THU DEC 24 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0700 AM HEAVY RAIN BROADWELL 40.07N 89.44W
12/24/2009 M1.46 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS REPORT
0700 AM HEAVY RAIN 1 ESE CHATHAM 39.67N 89.68W
12/24/2009 M1.48 INCH SANGAMON IL MESONET
48 HOUR RAINFALL...COCORAHS REPORT
0700 AM HEAVY RAIN CHESTNUT 40.07N 89.20W
12/24/2009 M1.24 INCH LOGAN IL MESONET
24 HOUR RAINFALL TOTAL...COCORAHS
0700 AM HEAVY RAIN 2 WNW DANVERS 40.54N 89.21W
12/24/2009 M1.00 INCH MCLEAN IL MESONET
48 HOUR RAINFALL TOTAL...COCORAHS
0700 AM HEAVY RAIN 3 W EDINBURG 39.66N 89.45W
12/24/2009 M1.09 INCH CHRISTIAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 2 ESE LE ROY 40.33N 88.73W
12/24/2009 M1.14 INCH MCLEAN IL MESONET
24 HOUR TOTAL...COCORAHS
0700 AM HEAVY RAIN 1 NW LINCOLN 40.16N 89.38W
12/24/2009 M1.10 INCH LOGAN IL MESONET
24 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN LINCOLN 40.15N 89.37W
12/24/2009 M1.39 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 1 SE LINCOLN 40.14N 89.35W
12/24/2009 M1.34 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 3 SW LINCOLN 40.12N 89.41W
12/24/2009 M1.18 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 2 SSE PEORIA 40.72N 89.59W
12/24/2009 M1.19 INCH PEORIA IL MESONET
24 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 1 NW JACKSONVILLE 39.74N 90.25W
12/24/2009 M1.22 INCH MORGAN IL MESONET
SOUTH JACKSONVILLE 1 NW...48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 3 NNW SPRINGFIELD 39.82N 89.67W
12/24/2009 M1.78 INCH SANGAMON IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN WAVERLY 39.59N 89.95W
12/24/2009 M1.56 INCH MORGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
&&
DPKLocal storm report, Dec 24, 11:35 AM CST, 3 hours 59 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE LINCOLN IL
1135 AM CST THU DEC 24 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1133 AM HEAVY RAIN 3 S CHESTNUT 40.02N 89.20W
12/24/2009 M1.55 INCH LOGAN IL MESONET
STORM TOTAL SO FAR...SWOP REPORT.
&&
DPKLocal storm report, Dec 24, 11:36 AM CST, 3 hours 58 minutes before
PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE LINCOLN IL
1136 AM CST THU DEC 24 2009
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 AM HEAVY RAIN 2 E JACKSONVILLE 39.73N 90.20W
12/24/2009 M1.34 INCH MORGAN IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0600 AM HEAVY RAIN LINCOLN 40.15N 89.37W
12/24/2009 M1.29 INCH LOGAN IL OFFICIAL NWS OBS
STORM TOTAL RAINFALL SO FAR
0600 AM HEAVY RAIN HAVANA 40.30N 90.06W
12/24/2009 M1.42 INCH MASON IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0600 AM HEAVY RAIN MOUNT PULASKI 40.01N 89.28W
12/24/2009 M1.23 INCH LOGAN IL CO-OP OBSERVER
24 HOUR RAINFALL
0600 AM HEAVY RAIN CHILLICOTHE 40.92N 89.50W
12/24/2009 M1.30 INCH PEORIA IL CO-OP OBSERVER
48 HOUR RAINFALL
0600 AM HEAVY RAIN SPRINGFIELD 39.78N 89.64W
12/24/2009 M1.68 INCH SANGAMON IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0600 AM HEAVY RAIN 4 NNE RIVERTON 39.90N 89.51W
12/24/2009 M1.58 INCH SANGAMON IL CO-OP OBSERVER
48 HOUR RAINFALL
0600 AM HEAVY RAIN 2 SW ATHENS 39.94N 89.75W
12/24/2009 M1.35 INCH MENARD IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN LINCOLN 40.15N 89.37W
12/24/2009 M1.39 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 1 SE LINCOLN 40.14N 89.35W
12/24/2009 M1.34 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 2 SSE PEORIA 40.72N 89.59W
12/24/2009 M1.19 INCH PEORIA IL MESONET
24 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 1 NW JACKSONVILLE 39.74N 90.25W
12/24/2009 M1.22 INCH MORGAN IL MESONET
SOUTH JACKSONVILLE 1 NW...48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN 3 NNW SPRINGFIELD 39.82N 89.67W
12/24/2009 M1.78 INCH SANGAMON IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN WAVERLY 39.59N 89.95W
12/24/2009 M1.56 INCH MORGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN WINCHESTER 39.63N 90.46W
12/24/2009 M1.40 INCH SCOTT IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN 2 NE PEORIA 40.77N 89.58W
12/24/2009 M1.38 INCH PEORIA IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN 2 N MASON CITY 40.23N 89.70W
12/24/2009 M1.58 INCH MASON IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN BROADWELL 40.07N 89.44W
12/24/2009 M1.46 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS REPORT
0700 AM HEAVY RAIN 1 ESE CHATHAM 39.67N 89.68W
12/24/2009 M1.48 INCH SANGAMON IL MESONET
48 HOUR RAINFALL...COCORAHS REPORT
0700 AM HEAVY RAIN CHESTNUT 40.07N 89.20W
12/24/2009 M1.24 INCH LOGAN IL MESONET
24 HOUR RAINFALL TOTAL...COCORAHS
0700 AM HEAVY RAIN 2 WNW DANVERS 40.54N 89.21W
12/24/2009 M1.00 INCH MCLEAN IL MESONET
48 HOUR RAINFALL TOTAL...COCORAHS
0700 AM HEAVY RAIN 3 W EDINBURG 39.66N 89.45W
12/24/2009 M1.09 INCH CHRISTIAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN VIRGINIA 39.95N 90.21W
12/24/2009 E2.04 INCH CASS IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN TAYLORVILLE 39.52N 89.26W
12/24/2009 M1.23 INCH CHRISTIAN IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN LEWISTOWN 40.40N 90.16W
12/24/2009 M1.28 INCH FULTON IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN MARIETTA 40.50N 90.39W
12/24/2009 M1.07 INCH FULTON IL CO-OP OBSERVER
0700 AM HEAVY RAIN 3 SW LINCOLN 40.12N 89.41W
12/24/2009 M1.18 INCH LOGAN IL MESONET
48 HOUR RAINFALL...COCORAHS
0700 AM HEAVY RAIN JACKSONVILLE 39.73N 90.23W
12/24/2009 M1.44 INCH MORGAN IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0700 AM HEAVY RAIN 3 SSW LOAMI 39.63N 89.87W
12/24/2009 M1.59 INCH SANGAMON IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0700 AM HEAVY RAIN FLORA 38.67N 88.48W
12/24/2009 M1.04 INCH CLAY IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN CLINTON 40.15N 88.96W
12/24/2009 M1.27 INCH DE WITT IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0700 AM HEAVY RAIN 3 W KINCAID 39.59N 89.47W
12/24/2009 M1.20 INCH CHRISTIAN IL CO-OP OBSERVER
48 HOUR RAINFALL TOTAL
0700 AM HEAVY RAIN BUFFALO 39.85N 89.41W
12/24/2009 M1.39 INCH SANGAMON IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN ST. DAVID 40.49N 90.05W
12/24/2009 M1.37 INCH FULTON IL CO-OP OBSERVER
48 HOUR RAINFALL
0700 AM HEAVY RAIN 2 ESE LE ROY 40.33N 88.73W
12/24/2009 M1.14 INCH MCLEAN IL MESONET
24 HOUR TOTAL...COCORAHS
0700 AM HEAVY RAIN 1 NW LINCOLN 40.16N 89.38W
12/24/2009 M1.10 INCH LOGAN IL MESONET
24 HOUR RAINFALL...COCORAHS
0754 AM HEAVY RAIN CHATHAM 39.67N 89.70W
12/24/2009 M1.26 INCH SANGAMON IL NWS EMPLOYEE
0800 AM HEAVY RAIN SPRINGFIELD 39.78N 89.64W
12/24/2009 M1.92 INCH SANGAMON IL CO-OP OBSERVER
48 HOUR RAINFALL...LAKE SPRINGFIELD
0800 AM HEAVY RAIN 2 SW PETERSBURG 39.99N 89.88W
12/24/2009 M1.28 INCH MENARD IL CO-OP OBSERVER
24 HOUR RAINFALL
0816 AM HEAVY RAIN 1 S MANITO 40.41N 89.78W
12/24/2009 M1.21 INCH MASON IL MESONET
48 HOUR RAINFALL...SWOP REPORT
0830 AM HEAVY RAIN NEWTON 38.99N 88.16W
12/24/2009 M1.12 INCH JASPER IL MESONET
STORM TOTAL SO FAR...SWOP REPORT
0840 AM HEAVY RAIN FLORA 38.67N 88.48W
12/24/2009 M1.13 INCH CLAY IL MESONET
24 HOUR RAINFALL...SWOP
0858 AM HEAVY RAIN PEORIA 40.74N 89.61W
12/24/2009 M1.17 INCH PEORIA IL MESONET
24 HOUR TOTAL
1133 AM HEAVY RAIN 3 S CHESTNUT 40.02N 89.20W
12/24/2009 M1.55 INCH LOGAN IL MESONET
STORM TOTAL SO FAR...SWOP REPORT.
&&
DPKLocal storm report, Dec 24, 12:47 PM CST, 2 hours 47 minutes before
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</html>Local storm report, Dec 24, 2:32 PM CST, 1 hour 2 minutes before
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</html>Local storm report, Dec 24, 3:09 PM CST, 25 minutes before
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</html>The office that day
Everything else NWS Lincoln, IL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 24, 8:47 AM CST | River Flood Warning | ILX | Clay, Richland | 9 days |
| Dec 24, 12:14 PM CST | River Flood Warning | ILX | Brown, Cass, Morgan, Schuyler | 6 days |
Nearby
Flash Flood Watches in Illinois, 2009Every flash flood watch in 2009
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.