Alert archive / Nebraska / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 62, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at May 29, 2018, 8:32 PM CDT for Jefferson County, Nebraska. It was in force for 58 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
- May 29, 2018, 8:32 PM CDT (01:32 UTC)
- Expired
- May 29, 2018, 9:30 PM CDT
- In force
- 58 min
- Issued by
- NWS Omaha, NE
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Jefferson County, NE
The radar
The Grand Island radar (KUEX), 111 km from the middle of the area, began a volume at 01:33 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 29, 2:40 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 1.5 hours before the alert went out and 143 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.
- Mixed-layer CAPE
- 2 J/kg
- Mixed-layer CIN
- -210 J/kg
- Mixed-layer LCL
- 1413 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
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 May 29, 3:02 PM CDT, 5 hours 30 minutes earlier.
Area forecast discussion, May 29, 3:02 PM CDT, 5 hours 30 minutes before
Area Forecast Discussion National Weather Service Omaha/Valley NE 302 PM CDT Tue May 29 2018 .SHORT TERM...(Tonight through Friday) Issued at 300 PM CDT Tue May 29 2018 Convection ongoing at the start of the period this afternoon as first in a series of short waves lifts across the area in advance of strong upper trough over the western high plains. Additional storms are likely into the late night hours as this system works its way across the region with storms ending by morning in eastern parts of the area as the main trough shifts to the east. Once this system is east of the area hot temperatures return for a short time as upper ridging moves back over the central plains for Thursday and Friday. .LONG TERM...(Friday night through Tuesday) Issued at 300 PM CDT Tue May 29 2018 Stormy conditions return to the region Friday night into Saturday as another strong upper trough sweeps across the northern and central plains. A strong cold front will accompany the upper system and bring more seasonal temperatures to the area through Monday before ridging again builds back for the middle of next week with another round of mid summer temperatures for the area. && .AVIATION...(For the 18Z TAFS through 18Z Wednesday morning) Issued at 102 PM CDT Tue May 29 2018 Showers and thunderstorms expected periodically this afternoon and tonight. Kept conditions VFR outside of thunderstorms and mentioned gusty winds...otherwise southeast through southwest winds 5 to 15kts. && .OAX WATCHES/WARNINGS/ADVISORIES... NE...None. IA...None. && SHORT TERM...Fobert LONG TERM...Fobert AVIATION...Zapotocny
Hazardous weather outlook, May 29, 3:50 PM CDT, 4 hours 42 minutes before
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Local storm report, May 29, 4:59 PM CDT, 3 hours 33 minutes before
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</html>Local storm report, May 29, 5:40 PM CDT, 2 hours 52 minutes before
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</html>The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 9:11 PM CDT | Special Weather Statement | OAX | Saline | 19 min |
| May 29, 9:21 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Jefferson, Lancaster, Saline | 39 min |
| May 29, 10:02 PM CDT | Special Weather Statement | OAX | Gage | 28 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2018Every severe thunderstorm warning in 2018
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.