Alert archive / New York / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 21, NWS Albany, NY

July 21, 2003Ulster County, New York

NWS Albany, NY issued this severe thunderstorm warning at Jul 21, 2003, 8:15 PM EDT for Ulster County, New York. It was in force for 30 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 21, 2003, 8:15 PM EDT (00:15 UTC)
Expired: Jul 21, 2003, 8:45 PM EDT
In force: 30 min
Issued by: NWS Albany, NY
Area: Whole counties

County Ulster County, NY

The radar

The Albany radar (KENX), 79 km from the middle of the area, began a volume at 00:14 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.

Issued	Product	Office	Lasted
Jul 21, 3:35 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Albany, NY (KALY), launched 00:00Z, 0.3 hours before the alert went out and 96 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: 1765 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 601 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 347 m²/s²
0-3 km storm-relative helicity: 418 m²/s²
Significant tornado parameter: 4.6
Supercell composite: 21.6

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KALY 220015
SVRALY
NYC111-220045-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ALBANY NY
815 PM EDT MON JUL 21 2003

THE NATIONAL WEATHER SERVICE IN ALBANY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN ULSTER COUNTY IN EASTERN NEW YORK

* UNTIL 845 PM EDT

* AT 814 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS FROM 5 MILES NORTH OF MANORVILLE TO
  ROSENDALE...MOVING NORTHEAST AT 40 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  SAUGERTIES AND PORT EWEN AT 820 PM EDT

THE GREATEST THREAT FROM THIS STORM IS DAMAGING WINDS. TAKE COVER IN
A STURDY STRUCTURE UNTIL THE STORM PASSES.

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

$$

LAT...LON 4190 7415 4210 7413 4210 7405 4219 7405
          4214 7392 4180 7395 4171 7416

The office that day

Everything else NWS Albany, NY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 21, 8:00 PM EDT	Severe Thunderstorm Warning	ALY	Columbia, Dutchess	60 min
Jul 21, 8:06 PM EDT	Tornado Warning	ALY	Greene	39 min
Jul 21, 8:20 PM EDT	Tornado Warning	ALY	Columbia	25 min
Jul 21, 8:22 PM EDT	Severe Thunderstorm Warning	ALY	Rensselaer	53 min
Jul 21, 8:43 PM EDT	Tornado Warning	ALY	Columbia, Rensselaer	47 min
Jul 21, 8:45 PM EDT	Severe Thunderstorm Warning	ALY	Washington	60 min

Nearby

Severe Thunderstorm Warnings in New York, 2003 Every severe thunderstorm warning in 2003

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.