Alert archive / Indiana / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 148, NWS Northern Indiana
NWS Northern Indiana issued this severe thunderstorm warning at Oct 13, 1999, 9:17 AM EST for LaGrange County, Indiana. It was in force for 33 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
- Oct 13, 1999, 9:17 AM EST (14:17 UTC)
- Expired
- Oct 13, 1999, 9:50 AM EST
- In force
- 33 min
- Issued by
- NWS Northern Indiana
- Area
- Whole counties
County LaGrange County, IN
The radar
The Northern Indiana radar (KIWX), 39 km from the middle of the area, began a volume at 14:21 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
Detroit, MI (KDTX), launched 12:00Z, 2.3 hours before the alert went out and 203 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
- 70 J/kg
- Mixed-layer CIN
- -454 J/kg
- Mixed-layer LCL
- 1272 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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.
NWS Northern Indiana wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 13, 3:30 AM EST, 5 hours 47 minutes earlier.
Area forecast discussion, Oct 13, 3:30 AM EST, 5 hours 47 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTHERN INDIANA 330 AM EST WED OCT 13 1999 OZFFWA AVBL...COORD WITH ILN. MAIN PROBLEM IS POPS/TSRA CHCS TODAY. STRONG WAVE DIGGING ACRS SERN MN DIGGING GRTLKS TROF. MODELS SIMILAR WITH AVN FAILING AGAIN WRT CYCLOGENESIS. ETA/NGM SOLNS LK RSNBL. AREA OF TSRA ACRS MID MI IN STEEP MID LVL LAPSE RATES AND HIR 925MB MSTR FLUX CONV. ANTCPT THIS AREA OF CONVCTN TO STAY NORTH OF FA. BETTER CHCS TSRA IMMEDIATELY AHEAD OF FNT LTR 18Z-22Z ACRS SERN FA AS MSTR POOLS ALNG FNT AND CAPES APPRCH 1200 J/KG LI TO M4. MOS TEMPS RUNNING A BIT COOL IN STRNG LWLVL WAA...WL GO ABOVE MOS TODAY AND MENTION FALLING TEMPS ALL BUT SERN ZNS WHERE SOME SUN EARLY SHOULD PUSH THEM WELL INTO LWR 70S. ETA COOLER BEHIND FNT AND SEEMS TO HAVE BETTER HANDLE WITH SHALLOW COLD AIR EARLY ON AS COMPARED TO LTST RUC. MUCH OF FA 850 TEMP 0-M2 DY2 OFFSET WITH GOOD SUN WILL TREND TEMPS A CAT BLO NGM MOS. .IWX...NONE PYLE/MURPHY
The office that day
Everything else NWS Northern Indiana issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 13, 8:57 AM EST | Severe Thunderstorm Warning | IWX | Elkhart, Saint Joseph | 33 min |
| Oct 13, 9:54 AM EST | Severe Thunderstorm Warning | IWX | Steuben | 36 min |
| Oct 13, 9:58 AM EST | Severe Thunderstorm Warning | IWX | Fulton | 37 min |
| Oct 13, 10:29 AM EST | Severe Thunderstorm Warning | IWX | Whitley | 36 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1999Every 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.