Alert archive / Nebraska / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 1, NWS Omaha, NE
NWS Omaha, NE issued this severe thunderstorm warning at Mar 13, 1990, 1:02 AM CST for Cass County, Sarpy County, Nebraska; Mills County, Iowa. It was in force for 43 min. 1 report 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
- Mar 13, 1990, 1:02 AM CST (07:02 UTC)
- Expired
- Mar 13, 1990, 1:45 AM CST
- In force
- 43 min
- Issued by
- NWS Omaha, NE
- Area
- Whole counties
Counties Mills County, IA, Cass County, NE, Sarpy County, NE
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 13, 1:20 AM CST | Hail 1.75 | Cass, NE |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 7.0 hours before the alert went out and 48 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3518 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 233 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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, Mar 12, 10:45 PM CST, 2 hours 17 minutes before
NEZ010-015-019-020-130600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 1040 PM CST MON MAR 12 1990 ...SCATTERED THUNDERSTORMS WERE OVER SECTIONS OF SOUTHEAST NEBRASKA AND SOUTHWEST IOWA... AT 1030 PM NATIONAL WEATHER SERVICE RADAR INDICATED STRONG THUNDERSTORMS MOVING INTO NEBRASKA WEST OF BEATRICE OR ABOUT 55 MILES SOUTHWEST OF LINCOLN. OTHER THUNDERSTORMS WERE RUMBLING OVER SOUTHEAST POTTAWATTAMIE COUNTY OF SOUTHWEST IOWA...OR AROUND 35 MILES SOUTHEAST OF OMAHA. THESE THUNDERSTORMS COULD PRODUCE SOME SMALL HAIL ALONG WITH BRIEF DOWNPOURS AND GUSTY WINDS AS THEY CONTINUE TO MOVE NORTHEAST AT 45 MPH. CHERMOK
Special weather statement, Mar 13, 12:35 AM CST, 27 minutes before
NEZ010-015-019-020-IAZ012-130800- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE OMAHA NE 1235 AM CST TUE MAR 13 1990 ...STRONG THUNDERSTORMS ACROSS SOUTHEAST NEBRASKA AND INTO SOUTHWEST IOWA... AT 1230 AM CST A BAND OF STRONG THUNDERSTORMS ABOUT 20 MILES WIDE WAS LOCATED ACROSS SOUTHEAST NEBRASKA INTO EXTREME SOUTHWEST IOWA WITH THE LEADING EDGE EXTENDING FROM JUST SOUTH OF LINCOLN EAST TO SIDNEY IOWA OR ABOUT 40 MILES SOUTH OF DOWNTOWN
The office that day
Everything else NWS Omaha, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 1:36 AM CST | Severe Thunderstorm Warning | OAX | Douglas | 69 min |
| Mar 13, 2:06 AM CST | Severe Thunderstorm Warning | OAX | Sarpy | 54 min |
| Mar 13, 8:45 AM CST | Severe Thunderstorm Warning | OAX | Dodge, Washington | 30 min |
| Mar 13, 4:16 PM CST | Severe Thunderstorm Warning | OAX | Sarpy | 59 min |
| Mar 13, 4:16 PM CST | Severe Thunderstorm Warning | OAX | Cass, Otoe | 59 min |
| Mar 13, 4:46 PM CST | Severe Thunderstorm Warning | OAX | Douglas, Sarpy | 44 min |
| Mar 13, 4:46 PM CST | Severe Thunderstorm Warning | OAX | Cass | 44 min |
| Mar 13, 2:24 AM CST | Severe Thunderstorm Warning | OAX | Harrison | 51 min |
| Mar 13, 10:27 AM CST | Severe Thunderstorm Warning | OAX | Harrison | 33 min |
| Mar 13, 1:38 PM CST | Severe Thunderstorm Warning | OAX | Shelby | 20 min |
| Mar 13, 3:55 PM CST | Severe Thunderstorm Warning | OAX | Montgomery, Page | 30 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 1990Severe Thunderstorm Warnings in Iowa, 1990Every severe thunderstorm warning in 1990
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.