Alert archive / Missouri / Flash Flood Watches in 2009

Flash Flood Watch 2, NWS Paducah, KY

June 10, 20094 counties in Missouri

NWS Paducah, KY issued this flash flood watch at Jun 10, 2009, 4:35 AM CDT for 4 counties in Missouri. It took effect at Jun 10, 2009, 6:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Jun 10, 2009, 4:35 AM CDT (09:35 UTC)
In effect from: Jun 10, 2009, 6:00 AM CDT
Expired: Jun 10, 2009, 12:00 PM CDT
In force: 6 hr
Issued by: NWS Paducah, KY
Flood severity: None

Counties Butler County, MO, Carter County, MO, Ripley County, MO, Wayne County, MO

The radar

The Paducah radar (KPAH), 171 km from the middle of the area, began a volume at 09:37 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

Little Rock, AR (KLZK), launched 00:00Z, 9.6 hours before the alert went out and 235 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: 1598 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 1271 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 158 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 4.1

Open this sounding in Storm Lab

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 Jun 10, 4:20 AM CDT, 15 minutes earlier.

Area forecast discussion, Jun 10, 4:20 AM CDT, 15 minutes before

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Hazardous weather outlook, Jun 9, 11:34 PM CDT, 5 hours 1 minute before

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In the hours before

Local storm report, Jun 9, 10:48 PM CDT, 5 hours 47 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 9, 7:04 PM CDT	Tornado Warning	PAH	Carter, Wayne	41 min
Jun 9, 8:11 PM CDT	Severe Thunderstorm Warning	PAH	Ripley	64 min
Jun 9, 9:09 PM CDT	Flash Flood Warning	PAH	Butler, Ripley	3 hr
Jun 10, 7:18 AM CDT	Areal Flood Advisory	PAH	Butler, Ripley	2 hr

Nearby

Flash Flood Watches in Missouri, 2009 Every 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.