Alert archive / Illinois / Flash Flood Watches in 2021
Flash Flood Watch 1, NWS Lincoln, IL
NWS Lincoln, IL issued this flash flood watch at Apr 28, 2021, 2:37 AM CDT for Clay County, Lawrence County, Richland County, Illinois. It took effect at Apr 28, 2021, 1:00 PM CDT. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Apr 28, 2021, 2:37 AM CDT (07:37 UTC)
- In effect from
- Apr 28, 2021, 1:00 PM CDT
- Expired
- Apr 29, 2021, 7:04 AM CDT
- In force
- 18 hr
- Issued by
- NWS Lincoln, IL
- Flood severity
- None
Counties Clay County, IL, Lawrence County, IL, Richland County, IL
The radar
The Evansville,IN radar (KVWX), 62 km from the middle of the area, began a volume at 07:43 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
Lincoln, IL (KILX), launched 00:00Z, 7.6 hours before the alert went out and 164 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
- 215 J/kg
- Mixed-layer CIN
- -267 J/kg
- Mixed-layer LCL
- 1754 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 137 m²/s²
- 0-3 km storm-relative helicity
- 288 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
753 WGUS63 KILX 280737 FFAILX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Lincoln IL 237 AM CDT Wed Apr 28 2021 ILZ071>073-281800- /O.NEW.KILX.FF.A.0001.210428T1800Z-210429T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Richland-Lawrence- Including the cities of Lawrenceville, Olney, and Flora 237 AM CDT Wed Apr 28 2021 ...FLASH FLOOD WATCH IN EFFECT FROM 1 PM CDT THIS AFTERNOON THROUGH THURSDAY AFTERNOON... The National Weather Service in Lincoln has issued a * Flash Flood Watch for a portion of southeast Illinois, including the following areas, Clay, Lawrence and Richland. * From 1 PM CDT this afternoon through Thursday afternoon * Several rounds of moderate to heavy rainfall is expected later this afternoon through Thursday morning. 2 to 3 inches of precipitation is currently forecast with locally higher amounts possible. This may result in flash flooding. * Excessive runoff may also result in flooding of rivers, streams, and creeks. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ NMB
4 follow-up statements
816 WGUS63 KILX 281738 FFAILX Flood Watch National Weather Service Lincoln IL 1238 PM CDT Wed Apr 28 2021 ILZ071>073-290500- /O.CON.KILX.FF.A.0001.210428T1800Z-210429T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Richland-Lawrence- Including the cities of Flora, Olney, and Lawrenceville 1238 PM CDT Wed Apr 28 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of southeast Illinois, including the following areas, Clay, Lawrence, and Richland. * Through Thursday afternoon * Several rounds of moderate to heavy rainfall is expected later this afternoon through Thursday morning. 2 to 3 inches of precipitation is currently forecast with locally higher amounts possible. This may result in flash flooding. * Excessive runoff may also result in flooding of rivers, streams, and creeks. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ Shimon
066 WGUS63 KILX 290338 FFAILX Flood Watch National Weather Service Lincoln IL 1038 PM CDT Wed Apr 28 2021 ILZ071>073-291145- /O.CON.KILX.FF.A.0001.000000T0000Z-210429T1800Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Richland-Lawrence- Including the cities of Lawrenceville, Olney, and Flora 1038 PM CDT Wed Apr 28 2021 ...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THURSDAY AFTERNOON... The Flash Flood Watch continues for * A portion of southeast Illinois, including the following areas, Clay, Lawrence and Richland. * Through Thursday afternoon * Several rounds of moderate to heavy rainfall is expected through Thursday morning. 2 to 3 inches of precipitation is currently forecast with locally higher amounts possible. This may result in flash flooding. * Excessive runoff may also result in flooding of rivers, streams, and creeks. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ 37
627 WGUS63 KILX 291022 FFAILX URGENT - IMMEDIATE BROADCAST REQUESTED Flood Watch National Weather Service Lincoln IL 522 AM CDT Thu Apr 29 2021 ILZ071>073-291500- /O.EXT.KILX.FF.A.0001.000000T0000Z-210429T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Richland-Lawrence- Including the cities of Lawrenceville, Olney, and Flora 522 AM CDT Thu Apr 29 2021 ...FLASH FLOOD WATCH NOW IN EFFECT UNTIL 10 AM CDT THIS MORNING... The Flash Flood Watch is now in effect for * A portion of southeast Illinois, including the following areas, Clay, Lawrence and Richland. * Until 10 AM CDT this morning * Moderate to heavy rainfall will continue through mid morning. Additional precipitation amounts of up to 1" are possible on top of the 1-2" that have already fallen. This may result in flash flooding. * Excessive runoff may also result in flooding of rivers, streams, and creeks. PRECAUTIONARY/PREPAREDNESS ACTIONS... Monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. && $$ NMB
800 WGUS63 KILX 291204 FFAILX Flood Watch National Weather Service Lincoln IL 704 AM CDT Thu Apr 29 2021 ILZ071>073-291315- /O.CAN.KILX.FF.A.0001.000000T0000Z-210429T1500Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ Clay-Richland-Lawrence- Including the cities of Lawrenceville, Olney, and Flora 704 AM CDT Thu Apr 29 2021 ...FLASH FLOOD WATCH IS CANCELLED... The Flash Flood Watch for a portion of southeast Illinois, including the following areas, Clay, Lawrence and Richland counties has been cancelled. The Flood Watch is cancelled. Heavy rainfall has exited the area and flash flooding is no longer a threat. $$ NMB
Nearby
Flash Flood Watches in Illinois, 2021Every flash flood watch in 2021
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.