Alert archive / Indiana / Severe Thunderstorm Warnings in 2003
Severe Thunderstorm Warning 275, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Sep 15, 2003, 11:25 AM EST for Blackford County, Jay County, Indiana. It was in force for 50 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
- Sep 15, 2003, 11:25 AM EST (16:25 UTC)
- Expired
- Sep 15, 2003, 12:15 PM EST
- In force
- 50 min
- Issued by
- NWS Northern Indiana
- Area
- Counties, with a storm outline in the text
Counties Blackford County, IN, Jay County, IN
The radar
The Northern Indiana radar (KIWX), 110 km from the middle of the area, began a volume at 16:25 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, 4.4 hours before the alert went out and 163 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 638 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- -55 m²/s²
- 0-3 km storm-relative helicity
- 13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
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 Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 15, 6:30 AM EST, 4 hours 55 minutes earlier.
Area forecast discussion, Sep 15, 6:30 AM EST, 4 hours 55 minutes before
AREA FORECAST DISCUSSION...CORRECTION TO ADD AVIATION DISCUSSION NATIONAL WEATHER SERVICE NORTHERN INDIANA 630 AM EST MON SEP 15 2003 AVIATION DISCUSSION FOR 06Z... DRYER AIR AND SUBSIDENCE WORKING INTO REGION BEHIND FRONT WITH SKIES CLEARING OUT. EXPECT SOME BKN VFR CEILINGS TO DEVELOP BY MID MORNING WITH COLD AIR ALOFT THEN MIXING OUT BY LATE DAY. VFR THROUGH TONIGHT WITH HIGH PRESSURE. PREVIOUS PUBLIC DISCUSSION 500MB TROF AXIS TO PASS OVER THE CWFA BY EARLY AFTERNOON. CURRENT RADAR SHOWS SPRINKLES AND DRIZZLE CONTINUING TO FORM OVER NORTHWEST INDIANA/NORTHEAST ILLINOIS AND SATELLITE SHOWS TOPS COOLING. WILL TIME THIS LIGHT PRECIP THROUGH EARLY THIS MORNING IN THE GRIDS. THEN THIS AFTERNOON...COLD POOL ALOFT MOVES OVERHEAD IN CONJUNCTION WITH 500MB TROF. 500MB TEMPS DOWN TO -23C GIVING 850-500 LAPSE RATES OF 7.1C/KM. LI DROPS TO -2. HOWEVER...THERE IS A SIGNIFICANT LACK OF SYNOPTIC MOISTURE...PWAT AROUND 0.70 INCHES AND TIME-HEIGHTS SHOWING LITTLE RH IN THE COLUMN...WITH PARTICULARLY DRY AIR SFC-900MB. CU RULES INDICATE VERY LITTLE CU THIS AFTERNOON. NEVERTHELESS...WITH COLD POOL MOVING ACROSS THE AREA NEAR PEAK HEATING...INSTABILITY SHOWERS ARE NOT OUT OF THE QUESTION SO WILL HAVE ISOLATED SHOWERS IN CENTRAL SECTIONS THIS AFTERNOON. MOISTURE IS SLIGHTLY BETTER NORTH...PRIMARILY IN MICHIGAN...SO WILL HAVE A 30 POP IN THE FAR NORTH. REST OF THE SHORT TERM LOOKS UNEVENTFUL AS HIGH PRESSURE MOVES FROM TEXAS TO NEW ENGLAND. WILL SIDE WITH COOLER FWC/MAV FOR MAX TEMPS...AND BLEND OF GUIDANCE FOR MINS. NO CHANGES TO THE OUTER PERIODS OF THE FORECAST. A .IWX... IN...NONE. MI...NONE. OH...NONE. 12/RES
Hazardous weather outlook, Sep 15, 10:30 AM EST, 55 minutes before
INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005- 015-016-024-025-161000- HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE NORTHERN INDIANA 1030 AM EST MON SEP 15 2003 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN INDIANA...NORTHWEST OHIO AND SOUTHWEST LOWER MICHIGAN. .DAY ONE...TODAY AND TONIGHT SCATTERED THUNDERSTORM WITH SMALL HAIL WILL DEVELOP THIS AFTERNOON. MORE NUMEROUS STORMS SHOULD BE NORTHEAST OF A LINE FROM BENTON HARBOR MICHIGAN TO MARION INDIANA. DAYTIME HEATING AND VERY COLD AIR ALOFT SHOULD TRIGGER STORMS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THUNDERSTORMS ARE POSSIBLE THURSDAY AND FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES, OR CHECK OUR WEB SITE AT WWW.CRH.NOAA.GOV/IWX
The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 11:05 AM EST | Severe Thunderstorm Warning | IWX | Wells | 40 min |
| Sep 15, 1:03 PM EST | Severe Thunderstorm Warning | IWX | Allen | 57 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 2003Every 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.