Alert archive / Ohio / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 82, NWS Cleveland, OH

July 23, 1999Erie County, Huron County, Ohio

NWS Cleveland, OH issued this severe thunderstorm warning at Jul 23, 1999, 6:35 PM EDT for Erie County, Huron County, Ohio. It was in force for 40 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 23, 1999, 6:35 PM EDT (22:35 UTC)
Expired: Jul 23, 1999, 7:15 PM EDT
In force: 40 min
Issued by: NWS Cleveland, OH
Area: Whole counties

Counties Erie County, OH, Huron County, OH

The radar

The Cleveland radar (KCLE), 67 km from the middle of the area, began a volume at 22:34 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 23, 6:00 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 10.6 hours before the alert went out and 172 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: 28 J/kg
Mixed-layer CIN: -342 J/kg
Mixed-layer LCL: 1152 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 73 m²/s²
0-3 km storm-relative helicity: 41 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KCLE 232237 RRA
SVRCLE
OHC043-077-232315-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CLEVELAND OH
635 PM EDT FRI JUL 23 1999

THE NATIONAL WEATHER SERVICE IN CLEVELAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  HURON COUNTY IN OHIO
  ERIE COUNTY IN OHIO

* UNTIL 715 PM EDT

* AT 635 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES EAST OF MILAN...OR ABOUT 6 MILES
  NORTHEAST OF NORWALK...MOVING SOUTHEAST AT 20 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  WAKEMAN
  MILAN

LARGE HAIL...DAMAGING WINDS...AND HEAVY RAINFALL ARE LIKELY WITH THIS
STORM. TAKE COVER IN A STURDY BUILDING UNTIL THE STORM HAS PASSED.

REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY
WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST
OFFICE IN CLEVELAND.

$$

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 Cleveland, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 23, 1:30 PM EDT, 5 hours 5 minutes earlier.

Area forecast discussion, Jul 23, 1:30 PM EDT, 5 hours 5 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE CLEVELAND OH
130 PM EDT FRI JUL 23 1999

LATEST RADAR COMPOSITE IMAGERY SHOWS A LARGE CLUSTER OF
THUNDERSTORMS OVER THE LOWER PENINSULA OF MI TRACKING ESE. LIGHTNING
DATA INDICATES A TREND TOWARD INTENSIFICATION. DEVELOPMENT WILL
OCCUR ON THE SOUTHERN END OF THE CLUSTER WHERE LI HAVE DECREASED TO
-9 AND BEST MSTR CONVERGENCE IS TAKING PLACE. THESE STORMS WILL MOVE
ESE INTO THE FA THIS EVENING. WILL UP POPS ACROSS THE AREA FOR
TONIGHT TO MINIMAL LIKELY W HALF AND TO 50 PERCENT E HALF.

MODELS ARE REASONABLY CLOSE IN THEIR SOLUTIONS FOR THE NEXT FEW
DAYS. SHORTWAVE RESPONSIBLE FOR FIRING TSTM ACTIVITY OVR MI WILL
TRACK E WITH VORT TROUGH EXTENDING S INTO OH BY 06Z TONIGHT. ONCE
THAT FEATURE MOVES E BY TOMORROW MORNING...FA REMAINS UNDER WEAK NVA
DURING THE DAY. ANOTHER SHORTWAVE DIVES SE ACROSS THE REGION SAT
EVENING. THIS COULD SET UP A REPEAT PERFORMANCE FOR SAT EVENING AS
POSSIBLY ANOTHER MCS DEVELOPS. MEANWHILE...RDG OVR CENTRAL U.S. WILL
BUILD AND TROUGH OVR THE ERN U.S. WILL DEEPEN. MAINLY CLEAR SKIES
CAN BE EXPECTED FOR SATURDAY THROUGH SUNDAY.  WILL NOT MENTION ANY
PCPN FOR TOMORROW NIGHT IN THIS FCST PACKAGE DUE TO UNCERTAINTY AS
TO WHETHER ANOTHER MCS WILL DEVELOP SATURDAY AFTERNOON.

MODELS DO SHOW SOME SIGNS OF STATIONARY FNT OVR THE FA SAGGING BACK
SOUTHWEST IN THE FORM OF A BACK DOOR COLD FRONT. THIS COULD BRING
SOME SLIGHTLY COOLER AIR INTO THE REGION ON SAT. HOWEVER...WITH
STRONG HIGH PRESSURE RIDGE OVR THE AREA...SINKING COMPRESSION OF AIR
WILL STILL ALLOW IT TO HEAT UP DURING THE DAYS.

WILL GO WITH TEMPERATURES FAIRLY CLOSE TO GUIDANCE THROUGH THE
PERIOD.

.CLE...NONE.

LOMBARDY

The office that day

Everything else NWS Cleveland, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 23, 6:06 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Richland	24 min
Jul 23, 6:06 PM EDT	Severe Thunderstorm Warning	CLE	Crawford, Richland	39 min
Jul 23, 6:44 PM EDT	Severe Thunderstorm Warning	CLE	Morrow, Richland	46 min
Jul 23, 6:53 PM EDT	Severe Thunderstorm Warning	CLE	Lucas	37 min
Jul 23, 7:24 PM EDT	Severe Thunderstorm Warning	CLE	Wood	36 min
Jul 23, 7:53 PM EDT	Tornado Warning	CLE	Wood	37 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1999 Every severe thunderstorm warning in 1999

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.