Alert archive / Maryland / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 184, NWS Baltimore/Washington

July 12, 2004Baltimore County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Jul 12, 2004, 11:11 AM EDT for Baltimore County, Maryland. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 12, 2004, 11:11 AM EDT (15:11 UTC)
Expired
Jul 12, 2004, 12:00 PM EDT
In force
49 min
Issued by
NWS Baltimore/Washington
Area
Counties, with a storm outline in the text

County Baltimore County, MD

The radar

The Sterling radar (KLWX), 91 km from the middle of the area, began a volume at 15:13 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

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.

NWS Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 12, 3:30 AM EDT, 7 hours 41 minutes earlier.

Area forecast discussion, Jul 12, 3:30 AM EDT, 7 hours 41 minutes before
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Hazardous weather outlook, Jul 12, 5:11 AM EDT, 6 hours before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
511 AM EDT MON JUL 12 2004

DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ021-025>031-036>042-
050>057-WVZ048>055-121510-
ALBEMARLE VA-ALLEGANY MD-ANNE ARUNDEL MD-
ARLINGTON/FALLS CHURCH/ALEXANDRIA VA-AUGUSTA VA-BERKELEY WV-
CALVERT MD-CARROLL MD-CHARLES MD-CLARKE VA-CULPEPER VA-
DISTRICT OF COLUMBIA DC-FAIRFAX VA-FAUQUIER VA-FREDERICK VA-
FREDERICK MD-GRANT WV-GREENE VA-HAMPSHIRE WV-HARDY WV-HARFORD MD-
HIGHLAND VA-HOWARD MD-JEFFERSON WV-KING GEORGE VA-LOUDOUN VA-
MADISON VA-MINERAL WV-MONTGOMERY MD-MORGAN WV-NELSON VA-
NORTHERN BALTIMORE MD-ORANGE VA-PAGE VA-PENDLETON WV-
PRINCE GEORGES MD-PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA-
RAPPAHANNOCK VA-ROCKINGHAM VA-SHENANDOAH VA-SOUTHERN BALTIMORE MD-
SPOTSYLVANIA VA-ST. MARYS MD-STAFFORD VA-WARREN VA-WASHINGTON MD-
511 AM EDT MON JUL 12 2004

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE CHESAPEAKE
BAY AND EAST OF GARRETT COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND
CENTRAL VIRGINIA AND WASHINGTON DC.

.DAY ONE...
A FLOOD WATCH IS IN EFFECT FOR MUCH OF THE AREA THROUGH TONIGHT.
SHOWERS AND THUNDERSTORMS WILL DEVELOP TODAY AND CONTINUE THROUGH
TONIGHT. THE THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HOURLY
RAINFALL AMOUNTS OF ONE TO TWO INCHES. THIS COULD CAUSE FLOODING OF
CREEKS...STREAMS...AND LOW LYING/POOR DRAINAGE AREAS. THE HEAVIEST
RAINFALL SHOULD AFFECT THE AREA THIS AFTERNOON AND EVENING. RAINFALL
WILL START TO TAPER OFF AROUND MIDNIGHT.

.DAYS TWO THROUGH SEVEN...

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED...
BUT RAINFALL REPORTS WILL BE GREATLY APPRECIATED.

In the hours before

Special weather statement, Jul 12, 7:44 AM EDT, 3 hours 27 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
744 AM EDT MON JUL 12 2004

MDZ002-003-VAZ021-025>031-036>040-050-051-056-WVZ048>055-121300-
ALBEMARLE VA-ALLEGANY MD-AUGUSTA VA-BERKELEY WV-CLARKE VA-
CULPEPER VA-FREDERICK VA-GRANT WV-GREENE VA-HAMPSHIRE WV-HARDY WV-
HIGHLAND VA-JEFFERSON WV-MADISON VA-MINERAL WV-MORGAN WV-NELSON VA-
ORANGE VA-PAGE VA-PENDLETON WV-RAPPAHANNOCK VA-ROCKINGHAM VA-
SHENANDOAH VA-SPOTSYLVANIA VA-WARREN VA-WASHINGTON MD-
744 AM EDT MON JUL 12 2004

...AREAS OF DENSE FOG EARLY THIS MORNING...

WITH THE ABUNDANT MOISTURE IN THE AIR THIS MORNING...AREAS OF DENSE
FOG HAVE FORMED IN THE POTOMAC HIGHLANDS...SHENANDOAH VALLEY AND
CENTRAL VIRGINIA. VISIBILITIES ARE UNDER A MILE IN SEVERAL LOCATIONS
AND SOME LOCATIONS ARE REPORTING VISIBILITIES AROUND 1/4 MILE.

VISIBILITIES ARE EXPECTED TO RAPIDLY IMPROVE TO ABOVE A MILE IN MOST
LOCATIONS BETWEEN 9 AND 10 AM.

MOTORISTS ARE URGED TO EXERCISE EXTREME CAUTION WHEN DRIVING THIS
MORNING. SLOW DOWN AND ALLOW EXTRA TIME TO REACH YOUR DESTINATION.
ALSO...INCREASE THE DISTANCE BETWEEN YOUR VEHICLE AND THE VEHICLE IN
FRONT OF YOU AS VISIBILITIES CAN CHANGE RAPIDLY ESPECIALLY WHEN
APPROACHING WATERWAYS...AND LOW SPOTS.

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

MANNING
Special weather statement, Jul 12, 10:19 AM EDT, 52 minutes before
ANZ534-121515-

MARINE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1019 AM EDT MON JUL 12 2004

...SPECIAL MARINE WARNING HAS EXPIRED FOR THE CHESAPEAKE BAY FROM
DRUM POINT TO SMITH POINT...

AT 10:15 AM EDT DOPPLER RADAR SHOWED A THUNDERSTORM ABOUT 4 MILES
EAST OF POINT LOOKOUT MARYLAND. THIS STORM WHICH EARLIER HAD
PROMPTED A SPECIAL MARINE WARNING HAS WEAKENED AND IS DRIFTING NORTH
AROUND 5 KNOTS. ANOTHER AREA OF SHOWERS AND THUNDERSTORMS WAS
LOCATED JUST EAST OF SMITH POINT VIRGINIA AND DRIFTING NORTH AROUND
5 KNOTS. BRIEF WIND GUSTS TO 30 KNOTS ARE POSSIBLE WITH THIS AREA OF
SHOWERS AND STORMS.

SMZ

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 12, 9:17 AM EDTSpecial Marine WarningLWX58 min
Jul 12, 11:29 AM EDTSpecial Marine WarningLWX91 min
Jul 12, 12:28 PM EDTSpecial Marine WarningLWX92 min
Jul 12, 4:32 PM EDTSevere Thunderstorm WarningLWXCulpeper58 min
Jul 12, 5:08 PM EDTSpecial Marine WarningLWX2 hr
Jul 12, 5:18 PM EDTSpecial Marine WarningLWX117 min
Jul 12, 5:56 PM EDTSpecial Marine WarningLWX2 hr
Jul 12, 6:21 PM EDTSpecial Marine WarningLWX114 min
Jul 12, 7:40 PM EDTFlash Flood WarningLWXAlbemarle3 hr
Jul 12, 1:12 PM EDTFlash Flood WarningLWXHarford3 hr
Jul 12, 4:13 PM EDTFlash Flood WarningLWXHarford4 hr
Jul 12, 5:08 PM EDTSevere Thunderstorm WarningLWXHarford37 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2004Every severe thunderstorm warning in 2004

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.