Alert archive / Pennsylvania / Areal Flood Warnings in 2011

Areal Flood Warning 36, NWS Cleveland, OH

May 15, 2011Crawford County, Erie County, Pennsylvania

NWS Cleveland, OH issued this areal flood warning at May 15, 2011, 10:34 AM EDT for Crawford County, Erie County, Pennsylvania. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 15, 2011, 10:34 AM EDT (14:34 UTC)
Expired: May 15, 2011, 7:30 PM EDT
In force: 9 hr
Issued by: NWS Cleveland, OH
Area: Storm-based polygon
Flood severity: None

Counties Crawford County, PA, Erie County, PA

The radar

The Pittsburgh radar (KPBZ), 153 km from the middle of the area, began a volume at 14:33 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

Detroit, MI (KDTX), launched 12:00Z, 2.6 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.

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: 2 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 488 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 200 m²/s²
0-3 km storm-relative helicity: 322 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this areal flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Cleveland, OH wrote its last area forecast discussion before this areal flood warning went out at May 15, 10:09 AM EDT, 25 minutes earlier.

Area forecast discussion, May 15, 10:09 AM EDT, 25 minutes before

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Hazardous weather outlook, May 15, 5:11 AM EDT, 5 hours 23 minutes before

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The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 14, 8:00 PM EDT	Areal Flood Warning	CLE	Geauga	4 hr
May 14, 11:04 PM EDT	Areal Flood Warning	CLE	Trumbull	6 hr
May 14, 11:40 PM EDT	River Flood Warning	CLE	Mahoning	5 hr
May 14, 11:53 PM EDT	Areal Flood Warning	CLE	Mahoning	5 hr
May 15, 12:36 AM EDT	Small Craft Advisory	CLE		4 days
May 15, 3:59 PM EDT	River Flood Warning	CLE	Mahoning	20 hr
May 14, 9:21 PM EDT	Flash Flood Warning	CLE	Crawford	4 hr
May 15, 1:32 AM EDT	Areal Flood Advisory	CLE	Crawford	6 hr

Nearby

Areal Flood Warnings in Pennsylvania, 2011 Every areal flood warning 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.