Alert archive / Nebraska / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 93, NWS Omaha, NE

June 7, 2009Cedar County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Jun 7, 2009, 2:50 PM CDT for Cedar County, Nebraska. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 7, 2009, 2:50 PM CDT (19:50 UTC)
Expired: Jun 7, 2009, 3:15 PM CDT
In force: 25 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

County Cedar County, NE

The radar

The Sioux Falls radar (KFSD), 118 km from the middle of the area, began a volume at 19:49 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 12:00Z, 7.8 hours before the alert went out and 160 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: 83 J/kg
Mixed-layer CIN: -238 J/kg
Mixed-layer LCL: 460 m above ground
0-6 km bulk shear: 49 kt
0-1 km storm-relative helicity: 318 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.2

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Omaha, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 7, 1:53 PM CDT, 57 minutes earlier.

Area forecast discussion, Jun 7, 1:53 PM CDT, 57 minutes before

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Hazardous weather outlook, Jun 7, 11:35 AM CDT, 3 hours 15 minutes before

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In the hours before

Local storm report, Jun 7, 10:00 AM CDT, 4 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
1000 AM CDT SUN JUN 07 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1043 PM     HAIL             FAIRBURY                40.14N 97.18W
06/06/2009  E1.00 INCH       JEFFERSON          NE   LAW ENFORCEMENT

1053 PM     HAIL             HARBINE                 40.19N 96.97W
06/06/2009  E0.75 INCH       JEFFERSON          NE   FIRE DEPT/RESCUE

1056 PM     HAIL             DILLER                  40.11N 96.94W
06/06/2009  E0.88 INCH       JEFFERSON          NE   EMERGENCY MNGR

1111 PM     HAIL             3 SE REYNOLDS           40.03N 97.30W
06/06/2009  E1.75 INCH       JEFFERSON          NE   EMERGENCY MNGR

1123 PM     HAIL             2 SW FAIRBURY           40.12N 97.20W
06/06/2009  E0.75 INCH       JEFFERSON          NE   EMERGENCY MNGR

1130 PM     HAIL             4 W FAIRBURY            40.14N 97.25W
06/06/2009  E1.25 INCH       JEFFERSON          NE   TRAINED SPOTTER

1133 PM     HAIL             5 W FAIRBURY            40.14N 97.27W
06/06/2009  E1.00 INCH       JEFFERSON          NE   PUBLIC

1142 PM     HAIL             4 S PLYMOUTH            40.25N 96.99W
06/06/2009  E1.75 INCH       JEFFERSON          NE   EMERGENCY MNGR

1155 PM     HAIL             2 E PLYMOUTH            40.30N 96.95W
06/06/2009  M1.00 INCH       JEFFERSON          NE   TRAINED SPOTTER

1157 PM     HAIL             PLYMOUTH                40.30N 96.99W
06/06/2009  E1.75 INCH       JEFFERSON          NE   PUBLIC

1213 AM     HAIL             1 SSW WESTERN           40.38N 97.21W
06/07/2009  E1.00 INCH       SALINE             NE   TRAINED SPOTTER

1213 AM     HAIL             5 N AUBURN              40.46N 95.84W
06/07/2009  E1.00 INCH       NEMAHA             NE   NWS EMPLOYEE

            DELAYED REPORT FROM OFF-DUTY NWS. 5 MI N OF AUBURN ON HWY
            75.

1218 AM     HAIL             1 E WESTERN             40.39N 97.18W
06/07/2009  M1.00 INCH       SALINE             NE   EMERGENCY MNGR

1221 AM     HAIL             2 NW SWANTON            40.40N 97.11W
06/07/2009  M0.88 INCH       SALINE             NE   EMERGENCY MNGR

1248 AM     HAIL             5 N CRETE               40.70N 96.96W
06/07/2009  E0.75 INCH       SEWARD             NE   TRAINED SPOTTER

0105 AM     HAIL             W LINCOLN               40.82N 96.69W
06/07/2009  M1.00 INCH       LANCASTER          NE   TRAINED SPOTTER

            SPOTTER REPORTED QUARTER SIZED HAIL...NORTH NORTHEAST OF
            CUSHMAN...WHICH IS WEST OF LINCOLN.

0112 AM     HAIL             LINCOLN                 40.82N 96.69W
06/07/2009  M1.00 INCH       LANCASTER          NE   TRAINED SPOTTER

            1 INCH HAIL REPORTED AT 27TH AND SUPERIOR

0123 AM     HAIL             DENTON                  40.74N 96.84W
06/07/2009  M1.00 INCH       LANCASTER          NE   EMERGENCY MNGR

0151 AM     HAIL             PERU                    40.48N 95.73W
06/07/2009  E1.00 INCH       NEMAHA             NE   TRAINED SPOTTER

0217 AM     HAIL             NEBRASKA CITY           40.68N 95.86W
06/07/2009  M0.75 INCH       OTOE               NE   LAW ENFORCEMENT

&&

MAYES

Local storm report, Jun 7, 10:36 AM CDT, 4 hours 14 minutes before

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Local storm report, Jun 7, 10:44 AM CDT, 4 hours 6 minutes before

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Local storm report, Jun 7, 11:20 AM CDT, 3 hours 30 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 10:40 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Saline	33 min
Jun 6, 10:55 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Johnson, Pawnee	50 min
Jun 6, 11:01 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson	44 min
Jun 6, 11:09 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Nemaha, Pawnee, Richardson	51 min
Jun 6, 11:34 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe, Pawnee	41 min
Jun 6, 11:40 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Johnson, Lancaster, Otoe, Saline	50 min
Jun 7, 12:01 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Pawnee, Richardson	44 min
Jun 7, 12:11 AM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Lancaster, Saline	49 min
Jun 7, 12:35 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	26 min
Jun 7, 12:58 AM CDT	Severe Thunderstorm Warning	OAX	Lancaster	31 min
Jun 7, 1:10 AM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy	51 min
Jun 7, 1:16 AM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Otoe	44 min
Jun 7, 2:02 AM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Otoe	43 min
Jun 7, 10:38 AM CDT	Severe Thunderstorm Warning	OAX	Madison, Pierce, Stanton, Wayne	26 min
Jun 7, 11:02 AM CDT	Severe Thunderstorm Warning	OAX	Thurston, Wayne	43 min
Jun 7, 2:52 PM CDT	Severe Thunderstorm Warning	OAX	Cuming, Thurston	38 min
Jun 7, 3:49 PM CDT	Severe Thunderstorm Warning	OAX	Antelope, Knox	41 min
Jun 7, 4:28 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Johnson, Pawnee	62 min
Jun 7, 4:54 PM CDT	Tornado Warning	OAX	Pawnee, Richardson	66 min
Jun 7, 5:25 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Pawnee, Richardson	35 min
Jun 7, 5:57 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha, Richardson	50 min
Jun 7, 5:59 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	46 min
Jun 7, 12:12 AM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	53 min
Jun 7, 7:38 AM CDT	Severe Thunderstorm Warning	OAX	Pottawattamie	35 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2009 Every severe thunderstorm warning 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.