Alert archive / Nebraska / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 190, NWS Hastings, NE

August 15, 20094 counties in Nebraska; Phillips County, Smith County, Kansas

NWS Hastings, NE issued this severe thunderstorm warning at Aug 15, 2009, 11:33 PM CDT for 4 counties in Nebraska; Phillips County, Smith County, Kansas. It was in force for 42 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
Aug 15, 2009, 11:33 PM CDT (04:33 UTC)
Expired
Aug 16, 2009, 12:15 AM CDT
In force
42 min
Issued by
NWS Hastings, NE
Area
Storm-based polygon

Counties Phillips County, KS, Smith County, KS, Franklin County, NE, Harlan County, NE, Kearney County, NE, Phelps County, NE

The radar

The Grand Island radar (KUEX), 62 km from the middle of the area, began a volume at 04:34 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 4.6 hours before the alert went out and 164 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2009-08-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1843 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2009-08-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 56 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
1843 J/kg
Mixed-layer CIN
-15 J/kg
Mixed-layer LCL
1286 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
56 m²/s²
0-3 km storm-relative helicity
89 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.2

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 10:46 PM CDTSpecial Weather StatementGIDFurnas29 min
Aug 15, 10:56 PM CDTSpecial Weather StatementGIDHarlan49 min
Aug 15, 11:01 PM CDTSevere Thunderstorm WarningGIDFranklin, Furnas, Harlan44 min
Aug 15, 11:27 PM CDTSpecial Weather StatementGIDPhelps33 min
Aug 15, 11:46 PM CDTSpecial Weather StatementGIDBuffalo29 min
Aug 15, 11:56 PM CDTSpecial Weather StatementGIDPhelps49 min
Aug 16, 12:03 AM CDTSpecial Weather StatementGIDAdams, Webster42 min
Aug 16, 12:13 AM CDTSpecial Weather StatementGIDBuffalo, Sherman32 min
Aug 16, 12:26 AM CDTSevere Thunderstorm WarningGIDAdams, Buffalo, Hall, Kearney34 min
Aug 16, 12:57 AM CDTSpecial Weather StatementGIDAdams33 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2009Severe Thunderstorm Warnings in Kansas, 2009Every 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.