Alert archive / Nebraska / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 141, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at May 29, 1998, 2:31 AM CDT for Jefferson County, Saline County, Seward County, Nebraska. It was in force for 59 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- May 29, 1998, 2:31 AM CDT (07:31 UTC)
- Expired
- May 29, 1998, 3:30 AM CDT
- In force
- 59 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
Counties Jefferson County, NE, Saline County, NE, Seward County, NE
The radar
The Omaha radar (KOAX), 110 km from the middle of the area, began a volume at 07:33 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 29, 2:40 AM CDT | Thunderstorm Wind 58 | Dorchester, NE | Large tree branches downed. |
| May 29, 2:45 AM CDT | Thunderstorm Wind 60 | Fairbury, NE | Many large tree limbs downed. Considerable tree damage. Some windows blown out. |
| May 29, 2:49 AM CDT | Thunderstorm Wind 51 | Wilber, NE | Trees and large branches downed. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
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 28, 9:15 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 7.5 hours before the alert went out and 110 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
- 2835 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1954 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 64 m²/s²
- 0-3 km storm-relative helicity
- 115 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 7.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, May 29, 1:50 AM CDT, 41 minutes before
NEZ011-012-015>018-031>034-290720- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 150 AM CDT FRI MAY 29 1998 ...SEVERE THUNDERSTORM WATCH #453 CANCELLED FOR NORTHEAST NEBRASKA... THE SEVERE THUNDERSTORM WATCH HAS BEEN CANCELLED FOR THE FOLLOWING COUNTIES IN NORTHEAST NEBRASKA...KNOX...CEDAR...ANTELOPE... PIERCE...WAYNE...THURSTON...MADISON...STANTON AND CUMING. SCATTERED THUNDERSTORMS WILL BE POSSIBLE FOR THE REMAINDER OF THE NIGHT ACROSS THE AREA BUT ARE EXPECTED TO REMAIN BELOW SEVERE LEVELS. FOBERT
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 10:18 PM CDT | Tornado Warning | OAX | Burt | 62 min |
| May 28, 10:34 PM CDT | Severe Thunderstorm Warning | OAX | Washington | 61 min |
| May 28, 10:56 PM CDT | Severe Thunderstorm Warning | OAX | Dodge | 49 min |
| May 28, 11:37 PM CDT | Severe Thunderstorm Warning | OAX | Colfax, Saunders | 48 min |
| May 28, 11:44 PM CDT | Severe Thunderstorm Warning | OAX | Dodge, Washington | 61 min |
| May 28, 11:57 PM CDT | Severe Thunderstorm Warning | OAX | Douglas | 63 min |
| May 29, 12:29 AM CDT | Severe Thunderstorm Warning | OAX | Saunders | 61 min |
| May 29, 12:43 AM CDT | Severe Thunderstorm Warning | OAX | Sarpy | 62 min |
| May 29, 1:02 AM CDT | Severe Thunderstorm Warning | OAX | Douglas | 58 min |
| May 29, 1:42 AM CDT | Severe Thunderstorm Warning | OAX | Saunders | 63 min |
| May 29, 1:49 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Lancaster | 61 min |
| May 29, 1:55 AM CDT | Severe Thunderstorm Warning | OAX | Sarpy | 45 min |
| May 29, 2:51 AM CDT | Severe Thunderstorm Warning | OAX | Cass, Otoe | 64 min |
| May 29, 2:54 AM CDT | Severe Thunderstorm Warning | OAX | Gage, Lancaster | 61 min |
| May 29, 3:02 AM CDT | Severe Thunderstorm Warning | OAX | Johnson, Pawnee | 63 min |
| May 29, 3:18 AM CDT | Severe Thunderstorm Warning | OAX | Nemaha, Richardson | 62 min |
| May 29, 3:45 AM CDT | Flash Flood Warning | OAX | Cass, Lancaster, Otoe | 3 hr |
| May 28, 8:40 PM CDT | Tornado Warning | OAX | Monona | 60 min |
| May 28, 9:40 PM CDT | Tornado Warning | OAX | Monona | 45 min |
| May 28, 10:25 PM CDT | Severe Thunderstorm Warning | OAX | Monona | 35 min |
| May 28, 10:54 PM CDT | Tornado Warning | OAX | Shelby | 61 min |
| May 28, 11:20 PM CDT | Severe Thunderstorm Warning | OAX | Harrison | 60 min |
| May 29, 1:36 AM CDT | Severe Thunderstorm Warning | OAX | Mills, Montgomery | 59 min |
| May 29, 2:33 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Mills, Montgomery, Page | 47 min |
| May 29, 3:38 AM CDT | Severe Thunderstorm Warning | OAX | Fremont, Page | 62 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1998Every severe thunderstorm warning in 1998
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.