Alert archive / Illinois / Flash Flood Watches in 2017
Flash Flood Watch 3, NWS Paducah, KY
NWS Paducah, KY issued this flash flood watch at May 2, 2017, 1:42 PM CDT for 15 counties in Illinois; 9 counties in Missouri. It took effect at May 3, 2017, 1:00 PM CDT. It was in force for 39 hr.
The area
The counties it named.
The facts
- Issued
- May 2, 2017, 1:42 PM CDT (18:42 UTC)
- In effect from
- May 3, 2017, 1:00 PM CDT
- Expired
- May 5, 2017, 3:47 AM CDT
- In force
- 39 hr
- Issued by
- NWS Paducah, KY
- Flood severity
- None
All 24 counties
Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Perry County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Perry County, MO, Ripley County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Paducah radar (KPAH), 75 km from the middle of the area, began a volume at 18:44 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 12:00Z, 6.7 hours before the alert went out and 288 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
- 1243 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 98 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 Paducah, KY wrote its last area forecast discussion before this flash flood watch went out at May 1, 6:15 PM CDT, 19 hours 27 minutes earlier.
Area forecast discussion, May 1, 6:15 PM CDT, 19 hours 27 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 |
|---|---|---|---|---|
| May 2, 3:21 AM CDT | Lake Wind Advisory | PAH | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more | 15 hr |
| May 2, 12:14 PM CDT | River Flood Warning | PAH | Union | 17 days |
| May 2, 5:32 AM CDT | Areal Flood Warning | PAH | Bollinger, Butler, Cape Girardeau, Carter, Perry, Ripley and 3 more | 4 days |
Nearby
Flash Flood Watches in Illinois, 2017Flash Flood Watches in Missouri, 2017Every flash flood watch in 2017
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.