Alert archive / Nebraska / Tornado Warnings in 1998
Tornado Warning 61, NWS Omaha, NE
NWS Omaha, NE issued this tornado warning at Jun 27, 1998, 9:43 PM CDT for Cass County, Nebraska. It was in force for 32 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 27, 1998, 9:43 PM CDT (02:43 UTC)
- Expired
- Jun 27, 1998, 10:15 PM CDT
- In force
- 32 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
County Cass County, NE
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 27, 9:00 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 2.7 hours before the alert went out and 49 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
- 4815 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 1274 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 2.3
- Supercell composite
- 15.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KOMA 280243 RRA TOROMA NEC025-280315- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 943 PM CDT SAT JUN 27 1998 THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A * TORNADO WARNING FOR... CASS COUNTY IN SOUTHEASTERN NEBRASKA * UNTIL 1015 PM CDT * AT 941 PM CDT... SPOTTERS REPORTED A POSSIBLE TORNADO 25 MILES EAST NORTHEAST OF LINCOLN OR 2 MILES WEST NORTHWEST OF PLATTE RIVER STATE PARK MOVING EAST AT 30 MPH. * THE TORNADO IS EXPECTED TO BE NEAR... PLATTE RIVER STATE PARK AT 942 PM CDT MANLEY AT 945 PM CDT LOUISVILLE AT 950 PM CDT CEDAR CREEK AT 955 PM CDT IF YOU ARE IN THE WARNED AREA...TAKE SHELTER IN A BASEMENT IF ONE IS AVAILABLE. OTHERWISE GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR. CARS AND MOBILE HOMES SHOULD BE ABANDONED. SMITH &
What forecasters said that day
The local office's own words before this tornado 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, Jun 27, 4:50 PM CDT, 4 hours 53 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-281200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 450 PM CDT SAT JUN 27 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE REQUIRED ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA THIS EVENING AND TONIGHT. DISCUSSION... A HUMID AND UNSTABLE AIRMASS COVERS EASTERN NEBRASKA...IOWA AND MINNESOTA. A WARM FRONT ACROSS SOUTHERN MINNESOTA WILL ACT AS ONE FOCUS FOR THUNDERSTORM DEVELOPMENT. A COLD FRONT FROM SOUTHEAST SOUTH DAKOTA SOUTH ACROSS SOUTH CENTRAL NEBRASKA TO SOUTHWEST KANSAS WILL SHIFT SLOWLY EAST. THIS FRONT MAY ACT AS A TRIGGER FOR THUNDERSTORM DEVELOPMENT. THUNDERSTORMS...IF THEY DEVELOP....MAY PRODUCE SEVERE WEATHER... INCUDING LARGE HAIL...DAMAGING WINDS AND THE POSSIBILITY OF TORNADOES. LOCALLY HEAVY RAINS ARE LIKELY IN THE THUNDERSTORMS. THE GREATEST CHANCE OF SEVERE WEATHER EARLY THIS EVENING WILL BE IN NORTHEAST NEBRASKA BUT THERE IS SOME THREAT ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA. POWERS
Special weather statement, Jun 27, 4:50 PM CDT, 4 hours 53 minutes before
NEZ011-012-015>018-030>034-042>045-050>053-065>068-078-088>093- IAZ043-055-056-069-079-080-090-091-281200- SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 450 PM CDT SAT JUN 27 1998 ...SEVERE WEATHER OUTLOOK FOR EASTERN NEBRASKA AND SOUTHWEST IOWA... SPOTTER ACTION... STORM SPOTTER ACTIVATION MAY BE REQUIRED ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA THIS EVENING AND TONIGHT. DISCUSSION... A HUMID AND UNSTABLE AIRMASS COVERS EASTERN NEBRASKA...IOWA AND MINNESOTA. A WARM FRONT ACROSS SOUTHERN MINNESOTA WILL ACT AS ONE FOCUS FOR THUNDERSTORM DEVELOPMENT. A COLD FRONT FROM SOUTHEAST SOUTH DAKOTA SOUTH ACROSS SOUTH CENTRAL NEBRASKA TO SOUTHWEST KANSAS WILL SHIFT SLOWLY EAST. THIS FRONT MAY ACT AS A TRIGGER FOR THUNDERSTORM DEVELOPMENT. THUNDERSTORMS...IF THEY DEVELOP....MAY PRODUCE SEVERE WEATHER... INCUDING LARGE HAIL...DAMAGING WINDS AND THE POSSIBILITY OF TORNADOES. LOCALLY HEAVY RAINS ARE LIKELY IN THE THUNDERSTORMS. THE GREATEST CHANCE OF SEVERE WEATHER EARLY THIS EVENING WILL BE IN NORTHEAST NEBRASKA BUT THERE IS SOME THREAT ACROSS EASTERN NEBRASKA AND SOUTHWEST IOWA. POWERS
Special weather statement, Jun 27, 7:32 PM CDT, 2 hours 11 minutes before
NEZ012>015-018-IAZ043-280130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 732 PM CDT SAT JUN 27 1998 ...TORNADO WATCH 683 NO LONGER IN EFFECT IN MUCH OF NORTHEAST NEBRASKA... TORNADO WATCH 683...ISSUED ABOUT 330 PM CDT THIS AFTERNOON IS NO LONGER IN EFFECT IN CEDAR...DIXON...DAKOTA AND WAYNE COUNTIES IN NORTHEAST NEBRASKA. COOLER AIR AT THE SURFACE HAS MOVE IN BEHIND A COOL FRONT AND STABILIZED THE AIRMASS ENOUGH THAT SEVERE THUNDERSTORM WEATHER IS NOT LIKELY. TORNADO WATCH 683 REMAINS IN EFFECT FOR THURSTON COUNTY NEBRASKA AND MONONA COUNTY IOWA UNTIL 10 PM CDT. THUNDERSTORMS CONTINUE TO DEVELOP IN LINE FROM SOUTHEAST OF SIOUX CITY IOWA TO SOUTH OF SCHUYLER NEBRASKA. POWERS
Special weather statement, Jun 27, 7:32 PM CDT, 2 hours 11 minutes before
NEZ012>015-018-IAZ043-280130- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA/VALLEY NE 732 PM CDT SAT JUN 27 1998 ...TORNADO WATCH 683 NO LONGER IN EFFECT IN MUCH OF NORTHEAST NEBRASKA... TORNADO WATCH 683...ISSUED ABOUT 330 PM CDT THIS AFTERNOON IS NO LONGER IN EFFECT IN CEDAR...DIXON...DAKOTA AND WAYNE COUNTIES IN NORTHEAST NEBRASKA. COOLER AIR AT THE SURFACE HAS MOVE IN BEHIND A COOL FRONT AND STABILIZED THE AIRMASS ENOUGH THAT SEVERE THUNDERSTORM WEATHER IS NOT LIKELY. TORNADO WATCH 683 REMAINS IN EFFECT FOR THURSTON COUNTY NEBRASKA AND MONONA COUNTY IOWA UNTIL 10 PM CDT. THUNDERSTORMS CONTINUE TO DEVELOP IN LINE FROM SOUTHEAST OF SIOUX CITY IOWA TO SOUTH OF SCHUYLER NEBRASKA. POWERS
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 27, 8:19 PM CDT | Severe Thunderstorm Warning | OAX | Lancaster | 46 min |
| Jun 27, 8:28 PM CDT | Severe Thunderstorm Warning | OAX | Gage, Lancaster, Saline | 62 min |
| Jun 27, 8:50 PM CDT | Severe Thunderstorm Warning | OAX | Douglas, Washington | 50 min |
| Jun 27, 8:50 PM CDT | Severe Thunderstorm Warning | OAX | Sarpy | 50 min |
| Jun 27, 9:10 PM CDT | Tornado Warning | OAX | Gage | 50 min |
| Jun 27, 9:19 PM CDT | Severe Thunderstorm Warning | OAX | Jefferson | 31 min |
| Jun 27, 9:36 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 49 min |
| Jun 27, 9:46 PM CDT | Tornado Warning | OAX | Jefferson | 34 min |
| Jun 27, 10:03 PM CDT | Tornado Warning | OAX | Gage | 32 min |
| Jun 27, 10:19 PM CDT | Severe Thunderstorm Warning | OAX | Cass | 46 min |
| Jun 27, 10:38 PM CDT | Severe Thunderstorm Warning | OAX | Gage | 47 min |
| Jun 27, 10:48 PM CDT | Flash Flood Warning | OAX | Gage, Jefferson | 6 hr |
Nearby
Tornado Warnings in Nebraska, 1998Every tornado warning in 1998Tornadoes 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; the sounding from the Mesonet's radiosonde archive.