Alert archive / Ohio / Mesoscale Discussions in 2003
Mesoscale Discussion 89
The Storm Prediction Center issued this mesoscale discussion at Feb 16, 2003, 2:38 PM EST for 8 counties in Indiana; 30 counties in Ohio. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 16, 2003, 2:38 PM EST (19:38 UTC)
- Expired
- Feb 16, 2003, 5:45 PM EST
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
All 38 counties
Decatur County, IN, Fayette County, IN, Franklin County, IN, Henry County, IN, Rush County, IN, Shelby County, IN, Union County, IN, Wayne County, IN, Athens County, OH, Belmont County, OH, Butler County, OH, Champaign County, OH, Clark County, OH, Clinton County, OH, Coshocton County, OH, Darke County, OH, Delaware County, OH, Fairfield County, OH, Fayette County, OH, Franklin County, OH, Greene County, OH, Guernsey County, OH, Harrison County, OH, Hocking County, OH, Licking County, OH, Madison County, OH, Miami County, OH, Monroe County, OH, Montgomery County, OH, Morgan County, OH, Muskingum County, OH, Noble County, OH, Perry County, OH, Pickaway County, OH, Preble County, OH, Ross County, OH, Warren County, OH, Washington County, OH
The radar
The Cincinnati radar (KILN), 33 km from the middle of the area, began a volume at 19:42 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 nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.6 hours before the alert went out and 32 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
- 7 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 429 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 327 m²/s²
- 0-3 km storm-relative helicity
- 368 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
583 ACUS11 KWNS 161939 SWOMCD SPC MCD 161938 INZ000-OHZ000-162245- MESOSCALE DISCUSSION 0089 NWS STORM PREDICTION CENTER NORMAN OK 0138 PM CST SUN FEB 16 2003 AREAS AFFECTED...CNTRL/SRN IND AND OH CONCERNING...HEAVY SNOW VALID 161938Z - 162245Z SNOW RATES AVERAGING 1 INCH PER HOUR APPEAR LIKELY IN EVOLVING BAND OF SNOW LATE THIS AFTERNOON/EARLY THIS EVENING. ALTHOUGH MODELS SUGGEST WEAKENING MID-LEVEL THERMAL GRADIENT ACROSS THE LOWER OHIO VALLEY LATE THIS AFTERNOON...MID-LEVEL CIRCULATION IS PROGGED TO DEVELOP EASTWARD OUT OF THE MIDDLE MISSISSIPPI VALLEY ALONG FRONTAL ZONE. AS THIS OCCURS...LOW/MID-LEVEL CONVERGENCE WILL BECOME ENHANCED IN ZONE ROUGHLY ALONG/JUST SOUTH OF INTERSTATE 70...FROM PARTS OF SOUTH CENTRAL INDIANA THROUGH PARTS OF SOUTHEASTERN OHIO...BY 17/00Z. STRENGTHENING UPWARD VERTICAL MOTION FIELD IN FAVORABLE MID-LEVEL DENDRITIC GROWTH LAYER IS EXPECTED TO RESULT IN CHANGEOVER TO SNOW/INTENSIFYING SNOW RATES DURING THE NEXT FEW HOURS IN INCREASINGLY ORGANIZED BAND NEAR/SOUTHEAST OF INDIANAPOLIS AREA THROUGH DAYTON/COLUMBUS TO NEAR PITTSBURGH PA. ..KERR.. 02/16/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... 39728593 39938557 40208469 40268342 40438171 40278063 39558090 39298192 39258325 39258430 39158528 39318572
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 6:41 PM EST | Mesoscale Discussion | SPC | Ohio, Switzerland | 3 hr |
| Feb 16, 12:12 AM EST | Mesoscale Discussion | SPC | Adams, Athens, Belmont, Brown, Fairfield, Gallia and 16 more | 5 hr |
Nearby
Mesoscale Discussions in Ohio, 2003Mesoscale Discussions in Indiana, 2003Every mesoscale discussion 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.