Alert archive / Maryland / Severe Thunderstorm Warnings in 2001

Severe Thunderstorm Warning 86, NWS Philadelphia/Mount Holly

July 1, 2001Caroline County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2001, 6:21 PM EDT for Caroline County, Maryland. It was in force for 24 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, 2001, 6:21 PM EDT (22:21 UTC)
Expired: Jul 1, 2001, 6:45 PM EDT
In force: 24 min
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

County Caroline County, MD

What was reported inside it

Time	Report	Where	Remark
Jul 1, 6:30 PM EDT	Thunderstorm Wind 52 E	Denton, 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.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.4 hours before the alert went out and 111 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 2061 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1103 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: 72 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KPHI 012222
SVRPHI

MDC011-012245-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
621 PM EDT SUN JUL 1 2001

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CAROLINE COUNTY IN EASTERN MARYLAND.

* UNTIL 645 PM EDT.

* AT 615 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM... 5 MILES SOUTHWEST OF GOLDSBORO...MOVING
  SOUTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
RURALSOUTHEASTERN CAROLINE COUNTY

HAIL UP TO ONE INCH IN DIAMETER AND WINDS GREATER THAN 55 MILES AN
HOUR ARE EXPECTED FROM THIS STORM. SEEK SHELTER IN A STURDY STRUCTURE
UNTIL THE STORM HAS PASSED.

THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS.

INTENSE LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IF
POSSIBLE. WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY. IF OUTDOORS...STAY AWAY
FROM ISOLATED HIGH OBJECTS SUCH AS TREES.

FOR THE LATEST STORM INFORMATION...PLEASE TUNE TO NOAA WEATHER
RADIO...YOUR LOCAL RADIO OR TELEVISION STATION...OR YOUR CABLE
TELEVISION OUTLET.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 900 PM 
SUNDAY EVENING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND

$$

LAT...LON 3906 7575 3901 7590 3894 7597 3870 7587
          3873 7572

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 1, 4:27 PM EDT	Severe Thunderstorm Warning	PHI	Kent	33 min
Jul 1, 4:53 PM EDT	Severe Thunderstorm Warning	PHI	Queen Anne's	37 min
Jul 1, 5:02 PM EDT	Severe Thunderstorm Warning	PHI	Kent	28 min
Jul 1, 5:38 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Queen Anne's	37 min
Jul 1, 6:33 PM EDT	Severe Thunderstorm Warning	PHI	Talbot	42 min
Jul 1, 7:00 PM EDT	Severe Thunderstorm Warning	PHI	Caroline	30 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2001 Every severe thunderstorm warning in 2001

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.