Alert archive / Maryland / Severe Thunderstorm Warnings in 2004

Severe Thunderstorm Warning 45, NWS Baltimore/Washington

May 9, 2004Howard County, Montgomery County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at May 9, 2004, 11:43 PM EDT for Howard County, Montgomery County, Maryland. It was in force for 47 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
May 9, 2004, 11:43 PM EDT (03:43 UTC)
Expired
May 10, 2004, 12:30 AM EDT
In force
47 min
Issued by
NWS Baltimore/Washington
Area
Counties, with a storm outline in the text

Counties Howard County, MD, Montgomery County, MD

The radar

The Sterling radar (KLWX), 44 km from the middle of the area, began a volume at 03:44 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 May 9, 10:40 PM EDT, 1 hour 3 minutes earlier.

Area forecast discussion, May 9, 10:40 PM EDT, 1 hour 3 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
940 PM EST SUN MAY 9 2004

UPDATE..

XCPT WHERE CONVECTION IS GOING ON RMNDR OF AREA LOOKS TO BE M CLR
OVRNGT. SOME PTCHY FOG IN MRNG...BUT NOT DENSE ENUF TO MAKE MENTION
OF IN ZNS. ILL BE SPENDING THE NEXT PD OF TIME WATCHING TO SEE IF
THE YORK CO. STORM WL SLIDE INTO HARFORD AT SVR LVLS...OR SLIDE E
INTO CECIL LK THE OTHER ONE DID.

WOODY

TONIGHT-MON...

LOOKS LIKE SUMMER WILL BE HERE TO STAY FOR A WHILE WITH SUBTROPICAL
HIGH FCST TO REMAIN OFF THE EAST COAST THROUGH THE END OF THE WEEK.
LIGHT SRLY FLOW AROUND HIGH WILL PROVIDE REGION WITH WARM AND HUMID
CONDITIONS WITH TYPICAL ISOLD TO WDLY SCT LATE AFTERNOON AND EARLY
EVENING CONVECTION AND PATCHY FOG TOWARD MORNING. WENT FOR HIGHS
TOMORROW NEAR 90F AWAY FROM THE WATER GIVEN EXPECTED WARM START TO
THE DAY AND H85 TEMPS NEAR 15C.

WITH RESPECT TO POTENTIAL FOR CONVECTION THIS EVENING LOOKS LIKE
BLUE RIDGE WILL BE POTENTIAL PLACE FOR INITIATION WITH ANY ACTIVITY
POSSIBLY PROPAGATING SLOWLY TO THE EAST. THERE WILL BE A LOCALIZED
THREAT OF GUSTY WINDS AND LARGE HAIL GIVEN WBZ LVLS BLO 10KFT AND
STEEP MID-LVL LAPSE RATES. STORMS SHOULD BE OF THE PULSE VARIETY
WITH LACK OF SHEAR. POTENTIAL EXIST FOR MCS DEVELOPMENT ACROSS
NCNTRL PA LATE THIS AFTERNOON WHICH COULD ROLL ALG WARM FRONT ACROSS
SERN PA THIS EVENING. THIS LOOKS TO AFFECT MAINLY PHLS AND CTPS
CWAS WITH HARFORD CTY MD HAVING THE BEST CHANCE OF SEEING SOMETHING
FROM THIS POTENTIAL MCS. WELL CONTINUE TO WATCH.

ROSA

.LONG TERM...
MONDAY NIGHT THROUGH SUNDAY...
RIDGE BUILDS OVER THE REGION WITH GOOD SOUTHERLY FLOW FROM THE
SUBTROPICAL ANTICYCLONE THAT WILL EXTEND OVER THE SOUTHEASTERN AND
MID ATLANTIC STATES MOST OF THE WEEK. WARM HUMID GULF AIR WITH TEMPS
IN THE 80S WILL BE THE RULE THIS WEEK WITH A SCHC/CHC OF AFTERNOON
AND EVENING THUNDERSTORMS ALMOST EVERY DAY. WESTERN TROF MOVES A
COLD FRONT SLOWLY THROUGH THE REGION NEXT WEEKEND. ND

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.
MARINE...NONE.
&&

ROSA/ND

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 11:28 PM EDTSpecial Marine WarningLWX92 min
May 10, 2:00 PM EDTSevere Thunderstorm WarningLWXShenandoah60 min
May 9, 8:11 PM EDTSevere Thunderstorm WarningLWXHarford34 min
May 9, 11:26 PM EDTSevere Thunderstorm WarningLWXHarford49 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.