Alert archive / Maryland / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 129, NWS Baltimore/Washington

June 6, 2002Howard County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 6, 2002, 6:07 PM EDT for Howard County, Maryland. It was in force for 38 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
Jun 6, 2002, 6:07 PM EDT (22:07 UTC)
Expired
Jun 6, 2002, 6:45 PM EDT
In force
38 min
Issued by
NWS Baltimore/Washington
Area
Whole counties

County Howard County, MD

The radar

The Sterling radar (KLWX), 57 km from the middle of the area, began a volume at 22:07 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 6, 2:30 PM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.1 hours before the alert went out and 53 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.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2002-06-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 202 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2002-06-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 43 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
202 J/kg
Mixed-layer CIN
-169 J/kg
Mixed-layer LCL
1312 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
43 m²/s²
0-3 km storm-relative helicity
84 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jun 6, 4:25 PM EDT, 1 hour 42 minutes earlier.

Area forecast discussion, Jun 6, 4:25 PM EDT, 1 hour 42 minutes before
IN SHORT TERM MUCH WX GOING ON...FLD WTCH TIL MIDNIGHT...SVR TSTM
WTCH TIL 8 PM. AFTR FNT MOVES SWD XPCT TRW TO DIMINISH TO
RW...TAPERING OFF FRI MRNG AS CD FNT FINALLY SLIDES S/HI PRES BLDS
INTO THE AREA.

WOODY

LONG TERM...
PLENTY OF SUN...COOL NGTS...AND NR OR SLIGHTLY BLO NORMAL TEMPS THIS
WEEKEND...AS SFC RIDGE BUILDS INTO THE MID ATLANTIC.

MED RANGE MDLS IN GOOD AGREEMENT THROUGH MUCH OF THE XTND. MUCH
QUIETER WX TO PREVAIL THROUGH THE WEEKEND AND INTO THE ERLY PART OF
THE WORK WEEK...WITH HIGH PRES ANCHORED OVER VA.

ECMWF AND MRF BOTH MOVE THE NEXT SHORTWAVE TROF INTO NRN PLAINS BY
MID WEEK AND EVENTUALLY TOWARD THE HUDSON BAY BY THE END OF THE
WEEK. A WEAK CDFNT TRAILS DOWN FROM THE UPR LOW INTO THE OH VLY BY
WED NGT.

ECMWF AND MRF DO SHOW SOME TIMING DIFFERENCES WITH THE CDFNT. PLAN
ON LEANING TOWARD A SLOWER SOLN...AS RIDGING OVER THE ERN US WL BE
SLOW TO GIVE WAY. ONLY CHGS TO XTND ATTM WL BE SOME SLGT TEMP
ADJUSTMENTS WED TO ACCOUNT FOR A SLOWER CDFNT PASSAGE. HV ALSO
INCLUDED POPS FOR THU/THU NGT WITH THE CDFNT PASSAGE. OTRW...NO
OTHER CHGS TO XTND.

MANNING

In the hours before

Special weather statement, Jun 6, 3:54 PM EDT, 2 hours 13 minutes before
DCZ001-VAZ054-062015-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
354 PM EDT THU JUN 6 2002

...STRONG TO SEVERE THUNDERSTORMS WILL AFFECT SOUTHEAST PORTIONS OF
THE WASHINGTON D.C. METRO AREA...

AT 349 PM...DOPPLER RADAR INDICATED AN AREA OF STRONG TO SEVERE
THUNDERSTORMS MOVING NORTHEAST AT 20 MPH THROUGH SOUTHERN
FAIRFAX...NORTHERN CHARLES AND SOUTHERN PRINCE GEORGES COUNTIES.
THESE STORMS WILL AFFECT THE SOUTHEAST PORTION OF THE DISTRICT OF
COLUMBIA AND PRODUCE SMALL HAIL...GUSTY WINDS...HEAVY RAIN AND
DANGEROUS LIGHTNING THROUGH 415 PM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT
THIS EVENING FOR THE ENTIRE AREA.

JA/DM
Local storm report, Jun 6, 4:07 PM EDT, 2 hours before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
407 PM EDT THU JUN 6 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0245 PM    RICHARDSVILLE             VA   1.00 INCH HAIL
06/06/02   CULPEPER                       REPORTED BY LAW
                                          ENFORCEMENT

0330 PM    POHICK BAY                VA   1.00 INCH HAIL
06/06/02   FAIRFAX                        BY SPOTTERS

0315 PM    NORTH STAFFORD COUNTY     VA   1.75 INCH HAIL
06/06/02   STAFFORD                       BY SPOTTERS

0315 PM    SOUTHERN PRINCE WILLIAM   VA   1.75 INCH HAIL
06/06/02   PRINCE WILLIAM                 BY SPOTTERS

0325 PM    COUNTYWIDE (NORTH & SOUTH)VA   WIND DAMAGE
06/06/02   FAUQUIER                       DOWN TREESREPORTED BY LAW
                                          ENFORCEMENT

MHP
Local storm report, Jun 6, 4:24 PM EDT, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON
424 PM EDT THU JUN 6 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0410 PM    BRANDYWINE                MD   1.75 INCH HAIL
06/06/02   PRINCE GEORGES                 BY SPOTTERS

MHP

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 5, 8:08 PM EDTSpecial Marine WarningLWX67 min
Jun 5, 8:37 PM EDTSpecial Marine WarningLWX68 min
Jun 5, 8:37 PM EDTSpecial Marine WarningLWX68 min
Jun 6, 2:05 PM EDTSevere Thunderstorm WarningLWXMadison40 min
Jun 6, 2:26 PM EDTSevere Thunderstorm WarningLWXCulpeper64 min
Jun 6, 2:50 PM EDTTornado WarningLWXCulpeper, Orange40 min
Jun 6, 2:56 PM EDTSpecial Marine WarningLWX49 min
Jun 6, 2:56 PM EDTSpecial Marine WarningLWX49 min
Jun 6, 2:58 PM EDTSevere Thunderstorm WarningLWXPrince William, Stafford47 min
Jun 6, 3:06 PM EDTSevere Thunderstorm WarningLWXFauquier39 min
Jun 6, 3:14 PM EDTSpecial Marine WarningLWX91 min
Jun 6, 3:16 PM EDTSpecial Marine WarningLWX29 min
Jun 6, 3:22 PM EDTSevere Thunderstorm WarningLWXFairfax53 min
Jun 6, 3:44 PM EDTSpecial Marine WarningLWX31 min
Jun 6, 4:01 PM EDTSpecial Marine WarningLWX89 min
Jun 6, 4:01 PM EDTSpecial Marine WarningLWX89 min
Jun 6, 4:01 PM EDTSpecial Marine WarningLWX89 min
Jun 6, 4:50 PM EDTSevere Thunderstorm WarningLWXClarke40 min
Jun 6, 5:04 PM EDTSevere Thunderstorm WarningLWXLoudoun41 min
Jun 6, 5:21 PM EDTSevere Thunderstorm WarningLWXAlbemarle, Greene, Madison, Orange39 min
Jun 6, 5:29 PM EDTSpecial Marine WarningLWX46 min
Jun 6, 5:29 PM EDTSpecial Marine WarningLWX46 min
Jun 6, 5:31 PM EDTTornado WarningLWXCulpeper, Fauquier44 min
Jun 6, 5:45 PM EDTTornado WarningLWXOrange45 min
Jun 6, 6:12 PM EDTSevere Thunderstorm WarningLWXStafford48 min
Jun 6, 6:32 PM EDTSevere Thunderstorm WarningLWXPrince William43 min
Jun 6, 6:35 PM EDTSpecial Marine WarningLWX25 min
Jun 6, 6:46 PM EDTSpecial Marine WarningLWX59 min
Jun 5, 8:35 PM EDTSevere Thunderstorm WarningLWXPrince George's40 min
Jun 5, 8:43 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert62 min
Jun 6, 2:52 PM EDTSevere Thunderstorm WarningLWXAnne Arundel38 min
Jun 6, 3:29 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Howard, Prince George's46 min
Jun 6, 4:12 PM EDTSevere Thunderstorm WarningLWXAnne Arundel, Calvert, Charles, Prince George's, Saint Mary's78 min
Jun 6, 4:32 PM EDTTornado WarningLWXCalvert28 min
Jun 6, 4:41 PM EDTTornado WarningLWXWashington49 min
Jun 6, 4:50 PM EDTTornado WarningLWXFrederick40 min
Jun 6, 5:23 PM EDTTornado WarningLWXCarroll37 min
Jun 6, 5:24 PM EDTSevere Thunderstorm WarningLWXMontgomery51 min
Jun 6, 5:50 PM EDTTornado WarningLWXBaltimore, City of Baltimore40 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2002Every severe thunderstorm warning in 2002

Sources

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