Alert archive / Maryland / Tornado Warnings in 1990
Tornado Warning 4, NWS Baltimore/Washington
NWS Baltimore/Washington issued this tornado warning at Jul 1, 1990, 3:50 PM EDT for Charles County, Saint Mary's County, Maryland. It was in force for 40 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
- Jul 1, 1990, 3:50 PM EDT (19:50 UTC)
- Expired
- Jul 1, 1990, 4:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties
Counties Charles County, MD, Saint Mary's 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 |
|---|---|---|---|
| Jul 1, 4:00 PM EDT | Thunderstorm Wind 0 | Charles, 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, 7.8 hours before the alert went out and 87 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
- 147 J/kg
- Mixed-layer CIN
- -183 J/kg
- Mixed-layer LCL
- 1047 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KBWI 011950 RRA
TORBWI
MDC017-037-012030-
BULLETIN - IMMEDIATE BROADCAST REQUESTED/EBS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD
350 PM EDT SUN JUL 1 1990
THE NATIONAL WEATHER SERVICE HAS ISSUED A TORNADO WARNING
EFFECTIVE UNTIL 430 PM EDT FOR PEOPLE IN THE FOLLOWING
COUNTIES
IN THE STATE OF MARYLAND
SOUTHERN CHARLES...ST MARYS
RADAR INDICATED A POSSIBLE TORNADO MOVING SOUTHEAST THROUGH
WESTERN CHARLES COUNTY AT ABOUT 35 MILES PER HOUR. AT THIS
DIRECTION AND SPEED IT COULD TAKE IT INTO ST MARY'S COUNTY
SHORTLY AFTER 4PM EDT.
IF YOU ARE IN THE PATH OF A TORNADO..GO TO A BASEMENT SHELTER
OR A CENTRAL INTERIOR ROOM ON THE LOWEST FLOOR. ABANDON CARS gAND
MOBILE HOMES FOR REINFORCED BUILDINGS.
PLEASE REPORT ALL SEVERE WEATHER TO LAW ENFORCEMENT OFFICIALS AND
ASK THERM TO RELAY THE REPORT ALONG TO A WEATHER SERVICE OFFICE.
FIGUEROAWhat 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, Jul 1, 1:35 PM EDT, 2 hours 15 minutes before
MDZ001>007-011730 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 130PM EDT SUN JUL 1 1990 ..SEVERE THUNDERSTORM WATCH IN EFFECT FOR MUCH OF CENTRAL AND WESTERN MARYLAND INCLDING THE BALTIMORE METRO AREA UNTIL 7PM EDT. AT 115PM EDT..WEATHER RADAR WAS INDICATING AN AREA OF SHOWERS AND THUND- ERSTORMS FROM SOUTHCENTRAL PENNSYLVANIA THROUGH FREDERICK AND WASHINGTON COUNTIES IN MARYLAND INTO WEST VIRGINIA. THERE ARE A COUPLE OF ISOLATED SHOWERS..RECENTLY DEVELOPED OVER WESTERN BALTIMORE AND CARROLL COUNTIES. ALL THE STORMS ARE MOVING SOUTHEAST AT ABOUT 25 TO 35 MILES PER HOUR. THIS AREA IS THE LEADING EDGE OF ACTIVITY WHICH HAS THE POTENTIAL TO PRODUCE LARGE HAIL..DAMAGIN#G WINDS AND DANGEROUS LIGHTNING. PERSONS OUT-OF-DOORS SHOULD BE PREPARED FOR THE POSSIBILITY OF RAPIDLY CHANGING WEATHER CONDITIONS AND TO TAKE APPROPRIATE ACTION IMMEDIATELY. FIGUEROA
Special weather statement, Jul 1, 2:11 PM EDT, 1 hour 39 minutes before
MDZ001>007-011815 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 210PM EDT SUN JUL 1 1990 ..STRONG THUNDERSTORMS MOVING INTO HOWARD AND CARROLL COUNTIES... AT 200PM EDT..WEATHER RADAR WAS INDICATING A VERY STRONG THUNDERSTORM MOVING SOUTHEAST FROM FREDERICK COUNTY AT ABOUT 35 MILES PER HOUR,THIS STORM IS MOVING ALONG THE MONTGOMERYAND HOWARD COUNTY LINE. THIS STORM MAY PRODUCE DAMAGING WINDS AND HAIL AS IT PASSES THROUGH THA`T AREA. PERSONS SHOULD BE PREPARED TO TAKE THE PROPER PRECAUTIONS AS THIS STORM APPROACHES. FIGUEROA
Special weather statement, Jul 1, 2:17 PM EDT, 1 hour 33 minutes before
MDZ001>007-011815 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 210PM EDT SUN JUL 1 1990 ..STRONG THUNDERSTORM MOVING INTO HOWARD AND MONTGOMERY COUNTIES.. AT 200PM EDT..WEATHER RADAR WAS INDICATING A VERY STRONG THUNDERSTORM MOVING SOUTHEAST FROM FREDERICK COUNTY AT ABOUT 35 MILES PER HOUR,THIS STORM IS MOVING ALONG THE MONTGOMERY AND HOWARD COUNTY LINE. THIS STORM MAY PRODUCE DAMAGING WINDS AND HAIL AS IT PASSES THROUGhH THAT AREA. PERSONS SHOULD BE PREPARED TO TAKE THE PROPER PRECAUTIONS AS THIS STORM APPROACHES. FIGUEROA
Special weather statement, Jul 1, 3:11 PM EDT, 39 minutes before
MDZ001>007-011910 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 310PM EDT SUN JUL 1 1990 ..STRONG THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL MARYLAND.... AT 300PM EDT..WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM KENT COUNTY ON THE EASTERN SHORE ACROSS THE BAY THROUGH ANNAPOLIS IN ANNE ARUNDEL..THROUGH PRINCE GEORGES COUNTY THE DISTRICT OF COLUMBIA INTO NORTHERN VIRGINIA. MOVEMENT IS TOWARD THE SOUTHEAST AT ABOUT 30 MILES PER HOUR, THE HEAVIEST STORMS ARE PRESENTLY OVER PRINCE GEORGES COUNTY AND THE DISTRICT OF COLUMBIA AND NORTHERN VIRGINIA. THESE STORM WILL BE MOVING THROUGH ANNE ARUNDEL COUNTY AND THROUGH CHARLES AND CALVERT COUNTIES IN SOUTHERN MARYLAND AND INTO THE BAY FROM BALTIMORE HARBOR TO NEAR THE PATUXENT RIVER. PERSONS SHOULD BE ON THE LOOKOUT FOR THREATENING CONDITIONS AND BE
Special weather statement, Jul 1, 3:13 PM EDT, 37 minutes before
MDZ001>007-011910 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 310PM EDT SUN JUL 1 1990 ..STRONG THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL MARYLAND.... AT 300PM EDT..WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM KENT COUNTY ON THE EASTERN SHORE ACROSS THE BAY THROUGH ANNAPOLIS IN ANNE ARUNDEL..THROUGH PRINCE GEORGES COUNTY THE DISTRICT OF COLUMBIA INTO NORTHERN VIRGINIA. MOVEMENT IS TOWARD THE SOUTHEAST AT ABOUT 30 MILES PER HOUR, THE HEAVIEST STORMS ARE PRESENTLY OVER PRINCE GEORGES COUNTY AND THE DISTRICT OF COLUMBIA AND NORTHERN VIRGINIA. THESE STORM WILL BE MOVING THROUGH ANNE ARUNDEL COUNTY AND THROUGH CHARLES AND CALVERT COUNTIES IN SOUTHERN MARYLAND AND INTO THE BAY FROM BALTIMORE HARBOR TO NEAR THE PATUXENT RIVER. PERSONS SHOULD BE ON THE LOOKOUT FOR THREATENING CONDITIONS AND BE PREPARED TO TAKE ACTION QUICKLY AND SAFELY. FIGUEROA
Special weather statement, Jul 1, 3:15 PM EDT, 35 minutes before
MDZ001>007-011910 NATIONAL WEATHER SERVICE BALTIMORE MD SPECIAL WEATHER STATEMENT 310PM EDT SUN JUL 1 1990 ..STRONG THUNDERSTORMS MOVING THROUGH SOUTH CENTRAL MARYLAND.... AT 300PM EDT..WEATHER RADAR INDICATED A LINE OF THUNDERSTORMS EXTENDING FROM KENT COUNTY ON THE EASTERN SHORE ACROSS THE BAY THROUGH ANNAPOLIS IN ANNE ARUNDEL COUNTY..THROUGH PRINCE GEORGES COUNTY THE DISTRICT OF COLUMBIA INTO NORTHERN VIRGINIA. MOVEMENT IS TOWARD THE SOUTHEAST AT ABOUT 35 MILES PER HOUR, THE HEAVIEST STORMS ARE PRESENTLY OVER PRINCE GEORGES COUNTY AND THE DISTRICT OF COLUMBIA AND NORTHERN VIRGINIA. THESE STORMS WILL BE MOVING THROUGH ANNE ARUNDEL COUNTY AND THROUGH CHARLES AND CALVERT COUNTIES IN SOUTHERN MARYLAND AND INTO THE BAY FROM BALTIMORE HARBOR TO SOUTH TO NEAR THE PATUXENT RIVER. PERSONS SHOULD BE ON THE LOOKOUT FOR THREATENING CONDITIONS AND BE PREPARED TO TAKE ACTION QUICKLY AND SAFELY. FIGUEROA
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 2:00 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 60 min |
| Jul 1, 2:59 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 61 min |
| Jul 1, 3:29 PM EDT | Severe Thunderstorm Warning | LWX | Calvert, Charles, Saint Mary's | 61 min |
| Jul 1, 5:05 PM EDT | Severe Thunderstorm Warning | LWX | Wicomico, Worcester | 55 min |
Nearby
Tornado Warnings in Maryland, 1990Every tornado warning in 1990Tornadoes 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.