Alert archive / Kentucky / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 99, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at Aug 29, 1990, 12:11 AM EDT for Boone County, Kentucky. It was in force for 64 min. 2 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
- Aug 29, 1990, 12:11 AM EDT (04:11 UTC)
- Expired
- Aug 29, 1990, 1:15 AM EDT
- In force
- 64 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Boone County, KY
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 |
|---|---|---|---|
| Aug 29, 12:15 AM EDT | Thunderstorm Wind 0 | Boone, KY | |
| Aug 29, 12:55 AM EDT | Thunderstorm Wind 0 | Boone, KY |
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
Dayton/James M C, OH (KDAY), launched 00:00Z, 4.2 hours before the alert went out and 113 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
- 1965 J/kg
- Mixed-layer CIN
- -35 J/kg
- Mixed-layer LCL
- 1458 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 6.6
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KCVG 290411
SVRCVG
KYC015-290515-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COVINGTON KY
1211 AM EDT WED AUG 29 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 115 AM EDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE NORTH PART OF KENTUCKY
BOONE
AT 1205 AM THIS MORNING WEATHER SERVICE RADAR INDICATED A POSSIBLE
SEVERE THUNDERSTORM MOVING INTO NORTHWEST BOONE COUNTY OF NORTHERN
KENTUCKY. THIS STORM HAS PRODUCED LARGE HAIL AND WAS MOVING SOUTH
EAST AROUND 30 MPH.
IF THREATENING WEATHER APPROACHES YOU SHOULD GO TO A SAFE
PLACE IMMEDIATELY AND ASK THE NEAREST LAW ENFORCEMENT AGENCY
TO RELAY YOUR SEVERE WEATHER REPORTS TO YOUR LOCAL NATIONAL
WEATHER SERVICE OFFICE.
JMMWhat 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, Aug 28, 8:30 PM EDT, 3 hours 41 minutes before
OHZ006-007-009-011-280230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE COLUMBUS OH 830 PM EDT TUE AUG 28 1990 A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THE NORTHERN TWO THIRDS OF OHIO UNTIL 10 PM EDT. AT 825 PM THE COLUMBUS WEATHER RADAR SHOWED A LARGE AREA OF SHOWERS AND THUNDERSTORMS OVER NORTHERN AND WEST CENTRAL OHIO. THE AREA OF SHOWERS AND THUNDERSTORMS WAS MOVING EAST TO SOUTHEAST AROUND 35 MPH THUNDERSTORMS ARE EXPECTED TO REACH WESTERN MARION AND UNION COUNTIES AROUND 9 PM. THESE THUNDERSTORMS MAY PRODUCE STRONG GUSTY WINDS AND BRIEF HEAVY RAINS. PEOPLE IN CENTRAL OHIO SHOULD REMAIN ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AND LISTEN FOR FURTHER STATEMENTS OR WARNINGS. LVW
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 11:21 PM EDT | Severe Thunderstorm Warning | ILN | Campbell, Kenton | 69 min |
| Aug 29, 12:28 AM EDT | Severe Thunderstorm Warning | ILN | Gallatin, Grant, Owen | 62 min |
Nearby
Severe Thunderstorm Warnings in Kentucky, 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.