Severe Thunderstorm Warning 273, NWS Northern Indiana

Issued

Sep 8, 2003, 4:38 PM EST (21:38 UTC)

Expired

Sep 8, 2003, 5:15 PM EST

In force

37 min

Issued by

NWS Northern Indiana

Area

Counties, with a storm outline in the text

County DeKalb County, IN

The Northern Indiana radar (KIWX), 66 km from the middle of the area, began a volume at 21:38 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.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

000 
WUUS53 KIWX 082138
SVRIWX
INC033-082215-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
436 PM EST MON SEP 8 2003

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DE KALB COUNTY IN INDIANA

* UNTIL 515 PM EST

* AT 436 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 10 MILES NORTH OF ST. JOE...MOVING SOUTH AT
  15 MPH.

* SOME LOCATIONS IN THE PATH OF THIS SEVERE THUNDERSTORM ARE...
  ST. JOE
  NEWVILLE

SEEK SHELTER INSIDE A STURDY BUILDING AWAY FROM WINDOWS. SEVERE
STORMS CAN PRODUCE DAMAGING WINDS AND DESTRUCTIVE HAIL.

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

LAT...LON 4128 8498 4131 8498 4145 8495 4144 8478
          4128 8478

NWS Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 8, 1:52 PM EST, 2 hours 46 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTHERN INDIANA
152 PM EST MON SEP 8 2003

LATEST WATER VAPOR LOOP SHOWING RATHER STATIONARY UPPER LOW OVER TN
VALLEY THIS AFTERNOON RESULTING IN A THIN OVERCAST SKY OVER MUCH OF
THE CWA. AIRMASS HAS BECOME MODERATELY UNSTABLE WITH LI OF -4 TO -6
AND CAPES 1500-2000 J/KG. EVEN WITH DEWPOINTS IN THE LOWER 60S...
VERTICAL PROFILES SHOWING A GENERAL LACK OF GOOD LOW LEVEL MOISTURE
AND WITH NO REAL TRIGGER IN PLACE STILL NOT EXPECTING MUCH IN THE
WAY OF DIRUNAL CONVECTION THIS AFTERNOON. NOT MUCH CHANGE IN THE
PATTERN THROUGH DAY 3. UPPER LOW OVER TN VALLEY WILL GRADUALLY
WEAKEN AND UPPER RIDGE WILL REMAIN OVER THE GREAT LAKES REGION. WILL
ONCE AGAIN SEE CONDITIONS DESTABLIZE DURING THE DAYTIME HOURS TUE
AND WED BUT CONTINUED LACK OF DEEP LOW LEVEL MOISTURE AND FORCING
SHOULD KEEP FORECAST DRY. WITH SIMILAR CONDITIONS TO LAST NIGHT
EXPECT TO ONCE AGAIN SEE PATCHY FOG OVER THE AREA AND WILL MAKE
MENTION OF THIS AFTER MIDNIGHT TO MID-MORNING. NO MAJOR CHANGES IN
TEMPS EXPECTED AS HIGHS SHOULD REMAIN AROUND 80 AND LOWS AROUND 60.

EXTENDED DISCUSSION
MODELS NOW DEEPER AND SLOWER WITH WRN TROF AND HAVE TIMED RAIN
CHANCES BACK TO FRIDAY AFTERNOON WEST INTO THE REMAINDER OF THE CWA
FRIDAY NIGHT. COLD FRONT NOW ALSO TIMED SLOWER TO PASS ON SUNDAY AND
ADDED CHC POPS ENTIRE CWA FIRST PART OF DAY SUNDAY. LITTLE CHANGE
TO PREVIOUS FORECAST TEMPS.

.IWX...
IN...NONE.
MI...NONE.
OH...NONE.

JAL/RES

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-091000-

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTHERN INDIANA
506 AM EST MON SEP 8 2003

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHERN INDIANA...NORTHWEST
OHIO AND SOUTHWEST LOWER MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

THUNDERSTORMS WILL BE POSSIBLE IN INDIANA AND MICHIGAN BY LATE
THURSDAY...AND THROUGHOUT THE AREA FRIDAY AND SATURDAY.

.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

12

Severe Thunderstorm Warnings in Indiana, 2003Every severe thunderstorm warning in 2003

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.