Alert archive / Maryland / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 21, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 8, 1990, 6:27 PM EDT for Cecil County, Harford County, Maryland. It was in force for 93 min. 4 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
- Jun 8, 1990, 6:27 PM EDT (22:27 UTC)
- Expired
- Jun 8, 1990, 8:00 PM EDT
- In force
- 93 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties
Counties Cecil County, MD, Harford County, MD
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 |
|---|---|---|---|
| Jun 8, 6:45 PM EDT | Thunderstorm Wind 0 | Harford, MD | |
| Jun 8, 6:45 PM EDT | Thunderstorm Wind 0 | Harford, MD | |
| Jun 8, 7:00 PM EDT | Hail 1.5 | Harford, MD | |
| Jun 8, 7:00 PM EDT | Thunderstorm Wind 0 | Cecil, MD |
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
Washington/Dulle, VA (KIAD), launched 12:00Z, 10.5 hours before the alert went out and 129 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
- 54 J/kg
- Mixed-layer CIN
- -251 J/kg
- Mixed-layer LCL
- 1053 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 62 m²/s²
- 0-3 km storm-relative helicity
- 239 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBWI 082227
SVRBWI
MDC013-005-025-015-090000-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD
627 PM EDT FRI JUN 8 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
AND SPECIAL MARINE WARNING EFFECTIVE UNTIL 800 PM EDT FOR
PEOPLE IN THE FOLLOWING COUNTIES
IN THE STATE OF MARYLAND
CENTRAL AND SOUTHERN CARROLL...EASTERN BALTIMORE...
HARFORD...CECIL...NORTHERN ADJACENT CHESAPEAKE BAY
...THIS WARNING ALSO INCLUDES THE ADJACENT COASTAL WATERS FOR THE
COUNTIES JUST MENTIONED
RADAR CONTINUE TO SHOW A LINE OF THUNDERSTORMS MOVING THROUGH
NORTH CENTRAL AND NORTHEAST MARYLAND. THESE THUNDERSTORMS ARE
MOVING EAST SOUTHEAST ABOUT 30 MPH. DAMAGING WINDS AND POSSIBLE
HAIL CAN BE EXPECTED WITH THESE THUNDERSTORMS.
THERE IS FREQUENT DANGEROUS LIGHTNING AND STRONG GUSTY WINDS WITH
THESE THUNDERSTORMS.
THESE ARE DANGEROUS STORMS..SEEK SHELTER IMMEDIATELY.
PLEASE REPORT ALL SEVERE WEATHER TO YOUR LOCAL LAW ENFORCEMENT
OFFICIALS AND ASK THEM TO PASS THE REPORT ALONG TO A WEATHER
SERVICE OFFICE.
MILLERThe office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 5:00 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 60 min |
| Jun 8, 5:59 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery | 61 min |
| Jun 8, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll | 93 min |
| Jun 8, 7:18 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Howard | 57 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 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.