Alert archive / Ohio / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 69, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at Jul 9, 1990, 8:49 PM EDT for Montgomery County, Ohio. It was in force for 56 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 9, 1990, 8:49 PM EDT (00:49 UTC)
- Expired
- Jul 9, 1990, 9:45 PM EDT
- In force
- 56 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Montgomery County, OH
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 9:00 PM EDT | Thunderstorm Wind 0 | Montgomery, OH |
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. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Dayton/James M C, OH (KDAY), launched 00:00Z, 0.8 hours before the alert went out and 18 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.
- Mixed-layer CAPE
- 732 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 696 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
In the hours before
Special weather statement, Jul 9, 3:17 PM EDT, 5 hours 32 minutes before
OHZ005-010-092015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DAYTON OH 317 PM EDT MON JUL 9 1990 THUNDERSTORMS WITH VERY HEAVY RAIN...GUSTY WINDS AND SMALL HAIL WERE ACROSS DARKE...MIAMI...AND CHAMPAIGN COUNTIES IN WESTERN OHIO AT 315 PM EDT. NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS ACROSS WESTERN OHIO BETWEEN GREENVILLE IN DARKE COUNTY AND COLUMBUS. THE LINE OF THUNDERSTORMS WAS DRIFTING SOUTH AT AROUND 15 MPH. PEOPLE IN PREBLE...MONTGOMERY...CLARK...AND GREENE COUNTIES IN WESTERN OHIO CAN EXPECT THESE THUNDERSTORMS TO SPREAD INTO THEIR COUNTIES BETWEEN 320 AND 400 PM EDT. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 900 PM EDT FOR ALL OF THE MIAMI )VALLEY AND WEST CENTRAL OHIO COUNTIES. < LINDSEY
Special weather statement, Jul 9, 7:12 PM EDT, 1 hour 37 minutes before
OHZ008-092355- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE CINCINNATI OH 714 PM EDT THU JUL 5 1990 THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUE IN WEST CENTRAL OHIO. A BAND OF STORMS WITH HEAVY RAIN WERE INDICATED BY THE RADAR AT 705 PM ALONG THE NORTHERN EDGE OF BUTLER AND WARREN COUNTIES OF SOUTHWEST OHIO. THE STORMS IN THE AREA WERE MOVING TO THE EAST 35 MPH. THIS AREA OF STORMS WILL DRIFT TO THE SOUTH OVER THE NORTHERN HALF OF BUTLER AND WARREN COUNTY BY 8 PM. HEAVY RAIN...GUSTY WINDS AND SMALL HAIL ARE LIKELY WITH THESE STORMS. SINCE THE AREA OF STORMS ARE FROM WEST TO EAST AND THE STORMS WITHIN THE AREA ARE MOVING TO THE EAST...THE REPEATED PASSAGE OF STORMS WILL PRODUCE HEAVY RAIN FALL AMOUNTS IN SOME AREA. THIS MAY CAUSE PONDING OF WATER IN LOW ARES. . JR
Special weather statement, Jul 9, 7:41 PM EDT, 1 hour 8 minutes before
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Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 8:17 PM EDT | Severe Thunderstorm Warning | ILN | Clermont | 58 min |
| Jul 9, 9:08 PM EDT | Severe Thunderstorm Warning | ILN | Greene | 52 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 1990Every severe thunderstorm warning in 1990
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.