Alert archive / Minnesota / Areal Flood Advisories in 2008

Areal Flood Advisory 7, NWS Twin Cities, MN

July 10, 2008Dakota County, Hennepin County, Minnesota

NWS Twin Cities, MN issued this areal flood advisory at Jul 10, 2008, 12:11 PM CDT for Dakota County, Hennepin County, Minnesota. It was in force for 2 hr.

The area

The counties it named.

The facts

Issued: Jul 10, 2008, 12:11 PM CDT (17:11 UTC)
Expired: Jul 10, 2008, 2:15 PM CDT
In force: 2 hr
Issued by: NWS Twin Cities, MN
Area: Storm-based polygon
Flood severity: None

Counties Dakota County, MN, Hennepin County, MN

The radar

The Minneapolis radar (KMPX), 23 km from the middle of the area, began a volume at 16:58 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

Minneapolis, MN (KMPX), launched 12:00Z, 5.2 hours before the alert went out and 26 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: 1956 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 100 m²/s²
0-3 km storm-relative helicity: 100 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 advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this areal flood advisory went out at Jul 10, 3:18 AM CDT, 8 hours 53 minutes earlier.

Area forecast discussion, Jul 10, 3:18 AM CDT, 8 hours 53 minutes before

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Hazardous weather outlook, Jul 10, 10:18 AM CDT, 1 hour 53 minutes before

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In the hours before

Special weather statement, Jul 10, 8:59 AM CDT, 3 hours 12 minutes before

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Special weather statement, Jul 10, 9:41 AM CDT, 2 hours 30 minutes before

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Special weather statement, Jul 10, 10:42 AM CDT, 1 hour 29 minutes before

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Special weather statement, Jul 10, 11:30 AM CDT, 41 minutes before

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Local storm report, Jul 10, 11:44 AM CDT, 27 minutes before

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Local storm report, Jul 10, 11:54 AM CDT, 17 minutes before

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The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 10, 8:21 AM CDT	Severe Thunderstorm Warning	MPX	Stevens	54 min
Jul 10, 9:25 AM CDT	Severe Thunderstorm Warning	MPX	Douglas	48 min
Jul 10, 11:55 AM CDT	Severe Thunderstorm Warning	MPX	Carver, Meeker, Wright	50 min
Jul 10, 12:04 PM CDT	Severe Thunderstorm Warning	MPX	Carver, McLeod	56 min
Jul 10, 12:17 PM CDT	Severe Thunderstorm Warning	MPX	Carver, Hennepin, Scott	43 min
Jul 10, 12:46 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Washington	44 min
Jul 10, 12:56 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Hennepin, Ramsey, Scott, Washington	49 min
Jul 10, 1:03 PM CDT	Severe Thunderstorm Warning	MPX	Dakota, Rice	57 min
Jul 10, 1:15 PM CDT	Tornado Warning	MPX	Dakota	30 min
Jul 10, 1:24 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	41 min
Jul 10, 1:27 PM CDT	Severe Thunderstorm Warning	MPX	Scott	33 min
Jul 10, 1:35 PM CDT	Tornado Warning	MPX	Goodhue	25 min
Jul 10, 2:00 PM CDT	Severe Thunderstorm Warning	MPX	Goodhue	15 min
Jul 10, 1:31 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pierce, Saint Croix	44 min
Jul 10, 2:15 PM CDT	Severe Thunderstorm Warning	MPX	Dunn, Pepin	34 min
Jul 10, 2:24 PM CDT	Severe Thunderstorm Warning	MPX	Eau Claire	51 min
Jul 10, 6:29 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Dunn, Polk, Saint Croix	61 min

Nearby

Areal Flood Advisories in Minnesota, 2008 Every areal flood advisory in 2008

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.