Maryland, 2001

Tornado and Hail in Maryland, May 27, 2001

May 27, 2001 · NWS LWX · 9 events in 4 counties and zones

Thunderstorms that produced damaging wind, large hail, and a tornado moved across central Maryland during the afternoon and evening hours of the 27th. 5 miles southwest of Olney and moved northeast into the center of town.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
$514,000
Crop damage
None recorded
Events
9

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS LWX wrote it up.

Thunderstorms that produced damaging wind, large hail, and a tornado moved across central Maryland during the afternoon and evening hours of the 27th. In Montgomery County, a tornado touched down 3.5 miles southwest of Olney and moved northeast into the center of town. The twister was rated an F1 and was 70 yards wide. The first sign of damage from the tornado was downed trees at the intersection of Muncaster Mill Road and Bowie Mill Road southwest of Olney. The tornado tracked east-northeast, passing just north of Magruder High School through North Branch Stream Valley Park. The damage path reappeared over Norbeck Country Club. Numerous trees were downed in a narrow area on the north end of the property and an employee saw the funnel cloud touch down. The damage to trees continued just east of the country club into the Cahsel Manor and Williamsburg Village neighborhoods on the southwest side of Olney. Over 40 trees were downed across the neighborhood. A car, shed, power line, and a large fence were significantly damaged by downed trees. One home sustained damage to a gutter and three other homes had small portions of siding pushed up or removed. Next, the tornado moved into the center of town and crossed just east of the intersection of Route 97 and 108. A restaurant just east of the intersection had pieces of roofing and insulation ripped off and carried blocks away. A few trees in the parking lot were also downed. Nearby, a strip mall which contained a multi-screen cinema and six shops sustained significant roof damage. Pieces of roofing material were found over a mile away from the site. Theater patrons saw ceiling tiles crashing down in the lobby. Fifty cars in the parking lot had damage to windows and a few storefront windows were also broken. Remarkably, no injuries were reported. The mall had to be evacuated and temporarily condemned until structural engineers could make repairs. The tornado continued to down trees northeast of the shopping center between Appomattox Road and Brooke Grove Elementary School before dissipating.In addition, the tornadic storm produced high winds a few miles west of Olney. Trees were downed near the intersection of Bowie Mill Road and Bready Drive. The same storm system dropped dime sized hail on Montgomery Village. A storm earlier in the afternoon downed trees in Rockville. Several other locations across the county reported pea to marble sized hail during the afternoon, including Potomac, Rockville, Silver Spring, and Burtonsville. Late in the evening another storm produced a funnel cloud over Avenel Golf Course in Potomac. No damage was reported. In Howard County, pea to marble sized hail fell in Columbia. Five miles south of town, dime to penny sized hail was reported. High winds caused power outages across the county. In Anne Arundel County, trees and power lines were downed in Glen Burnie, Rivera Beach, and Annapolis. Pea to marble sized hail fell in Jessup, Rivera Beach, Glen Burnie, and at Fort Meade. A wind gust of 45 MPH was reported in Pasadena. In Baltimore County, trees and power lines were downed in Cockeysville, Towson, and Middle River.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Baltimore/Washington wrote its last area forecast discussion before the first event at May 27, 9:00 AM EST, 4 hours 57 minutes earlier.

Area forecast discussion, May 27, 9:00 AM EST, 4 hours 57 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
1000 AM EDT SUN MAY 27 2001

A LINE OF SHOWERS ASSOCIATED WITH THE STRONG SHORTWAVE IS CURRENTLY
SWING THROUGH WV. AS IT MOVES IN TO VA AND MD IT WILL ENCOUNTER
INCREASING UNSTABLE CONDITIONS. (SEE SWODY1) HAVE ISSUED SWO FOR
THIS AFTERNOON. WILL UPDATED FIRST PD FOR STRONGER WORDING FOR
TSTMS. WILL ALSO ADD SOME POPS IN TONIGHT FOR THE NE ZONES.

.LWX...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.

ND

In the hours before

Special weather statement, May 27, 8:55 AM EST, 5 hours 2 minutes before
DCZ001-MDZ003>007-009>011-013-014-VAZ042-053-054-WVZ051>053-272300-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON
955 AM EDT SUN MAY 27 2001

...SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING...

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE DISTRICT OF
COLUMBIA...MARYLAND EAST OF WASHINGTON COUNTY TO THE CHESAPEAKE
BAY...THE EXTREME NORTHEAST SECTION OF VIRGINIA...AND MORGAN
...BERKELEY...AND JEFFERSON COUNTIES IN THE EASTERN WEST VIRGINIA
PANHANDLE.

THE LARGE AREA OF LOW PRESSURE WHICH HAS BEEN STATIONARY OVER
SOUTHERN MICHIGAN FOR THE PAST FEW DAYS WILL SLOWLY DRIFT TOWARD
OUR REGION LATER TODAY AND TONIGHT. AS THE LOW MOVES CLOSER A STRONG
DISTURBANCE WILL ROTATE AROUND THE LOW AND WILL PROVIDE THE FOCUS
FOR THUNDERSTORMS ACROSS REGION.

THUNDERSTORMS WILL DEVELOP TODAY IN THE MOUNTAINS...AND SPREAD
EASTWARD THIS AFTERNOON. THE THUNDERSTORMS WILL CONTINUE INTO THE
EVENING HOURS...ESPECIALLY IN THE WASHINGTON-BALTIMORE
METROPOLITAN AREA. STRONG WIND GUSTS...IN EXCESS OF 60 MPH AND HAIL
GREATER THAN THREE-QUARTERS OF AN INCH IN DIAMETER WILL BE THE MAJOR
THREATS FROM THESE THUNDERSTORMS.

THESE STORMS WILL ALSO PRODUCE AREAS OF HEAVY RAIN...RESULTING IN
RAPID RISES ON CREEKS AND SMALLER RIVERS.

STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER
DETAILS OR UPDATES.

FOR ADDITIONAL WEATHER INFORMATION, CHECK OUR WEB SITE AT
HTTP://WWW.NWS.NOAA.GOV/ER/LWX

The radar

The Sterling radar (KLWX), 34 km away, was scanning. The volume nearest the first event began at 18:37 UTC.

Open the radar archive at this moment

Event by event

5 thunderstorm wind, 2 hail, 1 tornado, 1 funnel cloud. Local standard time, as filed.

Hail, Montgomery

When
May 27, 1:57 PM EST
Where
Montgomery County, Montgomery Vlg
Measured
0.75 in hail
Reported by
TRAINED SPOTTER
Coordinates
39.167, -77.183

Dime sized hail was reported.

Tornado, Montgomery

When
May 27, 2:10 PM EST to 2:15 PM EST
Where
Montgomery County, 4 mi SW of Olney
Rating
F1
Path length
3.5 mi
Path width
70 yd
Property damage
$500,000
Reported by
NWS STORM SURVEY
Coordinates
39.117, -77.117

Numerous trees were downed and buildings were damaged.

Thunderstorm Wind, Montgomery

When
May 27, 2:12 PM EST
Where
Montgomery County, 2 mi W of Olney
Property damage
$1,000
Reported by
NWS STORM SURVEY
Coordinates
39.150, -77.100

A few trees were downed.

Hail, Howard

When
May 27, 2:25 PM EST
Where
Howard County, 5 mi S of Columbia
Measured
0.8 in hail
Reported by
EMERGENCY MANAGER
Coordinates
39.170, -76.850

Dime to penny sized hail fell.

Thunderstorm Wind, Baltimore

When
May 27, 3:00 PM EST
Where
Baltimore County, Towson
Property damage
$10,000
Reported by
LAW ENFORCEMENT
Coordinates
39.400, -76.600

Numerous trees and power lines were downed.

Thunderstorm Wind, Anne Arundel

When
May 27, 3:03 PM EST
Where
Anne Arundel County, Rivera Beach
Property damage
$500
Reported by
TRAINED SPOTTER
Coordinates
39.167, -76.517

A tree was downed.

Thunderstorm Wind, Baltimore

When
May 27, 3:10 PM EST
Where
Baltimore County, Middle River
Property damage
$2,000
Reported by
NEWSPAPER
Coordinates
39.333, -76.450

Trees were downed onto Darkhead Road.

Thunderstorm Wind, Montgomery

When
May 27, 5:55 PM EST
Where
Montgomery County, Rockville
Property damage
$500
Reported by
LAW ENFORCEMENT
Coordinates
39.083, -77.150

Trees were damaged.

Funnel Cloud, Montgomery

When
May 27, 6:20 PM EST
Where
Montgomery County, 2 mi SE of Potomac
Reported by
GENERAL PUBLIC
Coordinates
39.136, -77.204 (the zone’s center; the record gives no point)

A funnel cloud was reported over Avenel Golf Course.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Tornado
A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Funnel Cloud
A rotating column of cloud extending from a thunderstorm that did not reach the ground.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Maryland in 2001Every state in 2001This day in weather historyThe tornado archive for Maryland, 2001Warnings in Maryland, May 2001

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5248118, 5248119, 5248120, 5248121, 5248122, 5248123, 5248124, 5248125, 5248126.