Alert archive / Mississippi / Areal Flood Warnings in 2012

Areal Flood Warning 10, NWS Mobile, AL

August 30, 20125 counties in Mississippi

NWS Mobile, AL issued this areal flood warning at Aug 30, 2012, 1:18 PM CDT for 5 counties in Mississippi. It was in force for 20 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: Aug 30, 2012, 1:18 PM CDT (18:18 UTC)
Expired: Aug 31, 2012, 9:15 AM CDT
In force: 20 hr
Issued by: NWS Mobile, AL
Area: Storm-based polygon
Flood severity: None

Counties George County, MS, Greene County, MS, Perry County, MS, Stone County, MS, Wayne County, MS

The radar

The Mobile radar (KMOB), 75 km from the middle of the area, began a volume at 18:18 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

Slidell Radar S, LA (KSIL), launched 12:00Z, 6.3 hours before the alert went out and 130 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 0 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 282 m²/s²
0-3 km storm-relative helicity: 332 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 5.4

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 Mobile, AL wrote its last area forecast discussion before this areal flood warning went out at Aug 30, 12:30 PM CDT, 48 minutes earlier.

Area forecast discussion, Aug 30, 12:30 PM CDT, 48 minutes before

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Hazardous weather outlook, Aug 30, 6:11 AM CDT, 7 hours 7 minutes before

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In the hours before

Local storm report, Aug 30, 8:07 AM CDT, 5 hours 11 minutes before

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Local storm report, Aug 30, 9:44 AM CDT, 3 hours 34 minutes before

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Local storm report, Aug 30, 10:39 AM CDT, 2 hours 39 minutes before

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Special weather statement, Aug 30, 10:47 AM CDT, 2 hours 31 minutes before

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Local storm report, Aug 30, 12:40 PM CDT, 38 minutes before

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The office that day

Everything else NWS Mobile, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 29, 7:27 PM CDT	Tornado Warning	MOB	Monroe, Wilcox	30 min
Aug 29, 7:29 PM CDT	Small Craft Advisory	MOB		33 hr
Aug 29, 7:45 PM CDT	Coastal Flood Warning	MOB		21 hr
Aug 30, 12:22 AM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Aug 30, 12:52 AM CDT	Wind Advisory	MOB	Washington	16 hr
Aug 30, 2:28 AM CDT	Areal Flood Warning	MOB	Mobile, Washington	12 hr
Aug 30, 2:46 AM CDT	Tornado Warning	MOB	Covington	33 min
Aug 30, 3:53 AM CDT	Tornado Warning	MOB	Covington, Escambia	37 min
Aug 30, 4:09 AM CDT	Tornado Warning	MOB	Butler, Crenshaw	16 min
Aug 30, 4:31 AM CDT	Tornado Warning	MOB	Washington	29 min
Aug 30, 4:32 AM CDT	Tornado Warning	MOB	Covington	28 min
Aug 30, 6:43 AM CDT	Tornado Warning	MOB	Choctaw, Washington	37 min
Aug 30, 7:41 AM CDT	Tornado Warning	MOB	Mobile	33 min
Aug 30, 8:10 AM CDT	Tornado Warning	MOB	Choctaw, Washington	35 min
Aug 30, 8:13 AM CDT	Tornado Warning	MOB	Washington	32 min
Aug 30, 8:45 AM CDT	Tornado Warning	MOB	Choctaw, Washington	45 min
Aug 30, 9:01 AM CDT	Tornado Warning	MOB	Mobile, Washington	44 min
Aug 30, 10:16 AM CDT	Tornado Warning	MOB	Choctaw, Washington	44 min
Aug 30, 10:56 AM CDT	Tornado Warning	MOB	Choctaw	49 min
Aug 30, 11:32 AM CDT	Severe Thunderstorm Warning	MOB	Mobile	43 min
Aug 30, 11:44 AM CDT	Flash Flood Warning	MOB	Mobile, Washington	6 hr
Aug 30, 11:56 AM CDT	Tornado Warning	MOB	Choctaw	33 min
Aug 30, 4:29 PM CDT	High Surf Advisory	MOB		20 hr
Aug 29, 8:36 PM CDT	Flash Flood Warning	MOB	George, Greene, Perry, Stone	6 hr
Aug 29, 9:42 PM CDT	Tornado Warning	MOB	George, Greene, Perry	48 min
Aug 29, 10:20 PM CDT	River Flood Warning	MOB	George, Greene, Perry	9 days
Aug 29, 10:25 PM CDT	Tornado Warning	MOB	Greene, Perry, Wayne	26 min
Aug 29, 11:20 PM CDT	Flash Flood Warning	MOB	Greene, Perry, Wayne	6 hr
Aug 30, 2:13 AM CDT	River Flood Warning	MOB	Perry	22 hr
Aug 30, 4:37 AM CDT	River Flood Warning	MOB	George, Greene, Wayne	9 days
Aug 30, 5:22 AM CDT	Tornado Warning	MOB	Wayne	23 min
Aug 30, 5:48 AM CDT	Tornado Warning	MOB	Greene, Wayne	27 min
Aug 30, 6:28 AM CDT	Tornado Warning	MOB	Wayne	30 min
Aug 30, 7:07 AM CDT	Flash Flood Warning Emergency	MOB	George	6 hr
Aug 30, 7:18 AM CDT	Flash Flood Warning	MOB	Wayne	6 hr
Aug 30, 7:23 AM CDT	Tornado Warning	MOB	Wayne	22 min
Aug 30, 9:00 AM CDT	Flash Flood Warning Emergency	MOB	Greene	6 hr
Aug 30, 10:17 AM CDT	River Flood Warning	MOB	George, Greene, Jackson	9 days

Nearby

Areal Flood Warnings in Mississippi, 2012 Every areal flood warning in 2012

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.