Alert archive / Maryland / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 22, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 8, 1990, 7:18 PM EDT for Anne Arundel County, Howard County, Maryland. It was in force for 57 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
- Jun 8, 1990, 7:18 PM EDT (23:18 UTC)
- Expired
- Jun 8, 1990, 8:15 PM EDT
- In force
- 57 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties
Counties Anne Arundel County, MD, Howard 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, 7:30 PM EDT | Hail 3.5 | Howard, MD | |
| Jun 8, 8:00 PM EDT | Hail 3.5 | Howard, 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, 11.3 hours before the alert went out and 59 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
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, Jun 8, 5:42 PM EDT, 1 hour 36 minutes before
MDZ001>007- 082130 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 430 PM EDT FRI JUN 8 1990 ...SEVERE THUNDERSTORM WATCH IN EFFECT FOR ALL OF MARYLAND EXCEPT FOR GARRETT AND ALLEGANY COUNTIES AND THE LOWER EASTERN SHORE UNTIL 1100 PM EDT... A SEVERE THUNDERSTORM WATCH MEANS THAT THERE IS A POTENTIAL FOR SEVERE THUNDERSTORMS WITH DAMAGING WINDS AND LARGE HAIL IN AND CLOSEO TO THE COUNTIES THAT ARE IN THE WATCH AREA. AT 430 PM EDT RADAR AT PATUXENT RIVER WAS SHOWING A LINE OF THUNDERSTORMS MOVE EAST SOUTHEAST FROM PENNSYLVANIA ACROSS THE THE MARYLAND BORDER INTO NORTHERN FREDERICK AND CARROLL COUNTIES. THESE STORMS CAUSED QUITE A BIT OF DAMAGE WHILE MOVING THROUGH PENNSYLVANIA. THERE WERE SEVERAL REPORTS OF TREES AND POWER LINES BEING DOWNED. STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TELEVISION OR RADIO STATION FOR FURTHER INFORMATION DURING THE TIME THE WATCH IS IN EFFECT. MILLER
The 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, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Cecil, Harford | 93 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.