Alert archive / Nebraska / Flash Flood Warnings in 2008

Flash Flood Warning 26, NWS Hastings, NE

May 30, 2008Polk County, Nebraska

NWS Hastings, NE issued this flash flood warning at May 30, 2008, 1:43 AM CDT for Polk County, Nebraska. It was in force for 6 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 30, 2008, 1:43 AM CDT (06:43 UTC)
Expired: May 30, 2008, 7:45 AM CDT
In force: 6 hr
Issued by: NWS Hastings, NE
Area: Storm-based polygon
Flood severity: None

County Polk County, NE

The radar

The Omaha radar (KOAX), 102 km from the middle of the area, began a volume at 06:43 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

Omaha, NE (KOAX), launched 00:00Z, 6.7 hours before the alert went out and 101 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: 3876 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 824 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 236 m²/s²
0-3 km storm-relative helicity: 285 m²/s²
Significant tornado parameter: 6.4
Supercell composite: 26.8

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Hastings, NE wrote its last area forecast discussion before this flash flood warning went out at May 30, 12:30 AM CDT, 1 hour 13 minutes earlier.

Area forecast discussion, May 30, 12:30 AM CDT, 1 hour 13 minutes before

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Hazardous weather outlook, May 30, 1:11 AM CDT, 32 minutes before

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In the hours before

Local storm report, May 29, 10:46 PM CDT, 2 hours 57 minutes before

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Special weather statement, May 29, 10:46 PM CDT, 2 hours 57 minutes before

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Special weather statement, May 29, 11:20 PM CDT, 2 hours 23 minutes before

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Special weather statement, May 29, 11:24 PM CDT, 2 hours 19 minutes before

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Local storm report, May 29, 11:29 PM CDT, 2 hours 14 minutes before

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Special weather statement, May 29, 11:59 PM CDT, 1 hour 44 minutes before

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The office that day

Everything else NWS Hastings, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 29, 7:05 PM CDT	Tornado Warning	GID	Clay, Hamilton, Polk, York	40 min
May 29, 7:25 PM CDT	Flash Flood Warning	GID	York	6 hr
May 29, 7:35 PM CDT	Tornado Warning	GID	Polk, York	25 min
May 29, 8:13 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Thayer	24 min
May 29, 8:21 PM CDT	River Flood Warning	GID	Hall	16 hr
May 29, 8:21 PM CDT	River Flood Warning	GID	Buffalo	16 hr
May 29, 8:21 PM CDT	River Flood Warning	GID	Buffalo	16 hr
May 29, 8:39 PM CDT	Flash Flood Warning	GID	Nance	6 hr
May 29, 8:42 PM CDT	Flash Flood Warning	GID	Franklin, Harlan	6 hr
May 29, 8:58 PM CDT	Severe Thunderstorm Warning	GID	Franklin	32 min
May 29, 8:59 PM CDT	Tornado Warning	GID	Webster	28 min
May 29, 9:30 PM CDT	Severe Thunderstorm Warning	GID	Franklin, Webster	45 min
May 29, 9:34 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, Thayer	26 min
May 29, 9:55 PM CDT	Tornado Warning	GID	Thayer	50 min
May 29, 10:03 PM CDT	Severe Thunderstorm Warning	GID	Nuckolls, Webster	42 min
May 29, 10:13 PM CDT	Severe Thunderstorm Warning	GID	Fillmore, York	22 min
May 29, 10:16 PM CDT	Flash Flood Warning	GID	Nuckolls, Thayer, Webster	5 hr
May 30, 2:27 AM CDT	River Flood Warning	GID	Nance	22 hr
May 30, 4:18 AM CDT	River Flood Warning	GID	Nance	5 hr
May 30, 7:40 AM CDT	Areal Flood Warning	GID	Polk	12 hr
May 29, 7:24 PM CDT	Tornado Warning	GID	Osborne, Rooks	51 min
May 29, 7:26 PM CDT	Severe Thunderstorm Warning	GID	Osborne, Phillips, Rooks, Smith	49 min
May 29, 7:29 PM CDT	Tornado Warning	GID	Jewell, Smith	46 min
May 29, 7:40 PM CDT	Flash Flood Warning	GID	Jewell	6 hr
May 29, 7:57 PM CDT	Tornado Warning	GID	Mitchell, Osborne	48 min
May 29, 8:13 PM CDT	Severe Thunderstorm Warning	GID	Phillips, Smith	32 min
May 29, 8:18 PM CDT	Severe Thunderstorm Warning	GID	Phillips, Rooks	42 min
May 29, 8:25 PM CDT	Tornado Warning	GID	Smith	50 min
May 29, 8:30 PM CDT	Flash Flood Warning	GID	Mitchell, Osborne	6 hr
May 29, 8:43 PM CDT	Tornado Warning	GID	Jewell, Mitchell	47 min
May 29, 8:54 PM CDT	Severe Thunderstorm Warning	GID	Osborne, Phillips, Rooks, Smith	51 min
May 29, 8:58 PM CDT	River Flood Warning	GID	Rooks	19 hr
May 29, 8:58 PM CDT	Tornado Warning	GID	Jewell	32 min
May 29, 9:21 PM CDT	Tornado Warning	GID	Osborne, Rooks, Smith	24 min
May 29, 9:45 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Mitchell, Osborne, Phillips, Rooks, Smith	45 min
May 29, 10:09 PM CDT	Tornado Warning	GID	Jewell	36 min
May 29, 10:13 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Mitchell	47 min
May 29, 10:30 PM CDT	Severe Thunderstorm Warning	GID	Jewell, Mitchell, Osborne, Rooks, Smith	45 min
May 29, 10:52 PM CDT	Severe Thunderstorm Warning	GID	Jewell	26 min
May 30, 12:00 PM CDT	River Flood Warning	GID	Osborne	23 hr
May 30, 6:45 PM CDT	Areal Flood Warning	GID	Rooks	28 hr

Nearby

Flash Flood Warnings in Nebraska, 2008 Every flash flood warning 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.