Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 74, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 1997, 4:32 PM EDT for Gilchrist County, Florida. It was in force for 58 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
- Jun 12, 1997, 4:32 PM EDT (20:32 UTC)
- Expired
- Jun 12, 1997, 5:30 PM EDT
- In force
- 58 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
County Gilchrist County, FL
The radar
The Moody AFB radar (KVAX), 131 km from the middle of the area, began a volume at 20:31 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
Jacksonville, FL (KJAX), launched 12:00Z, 8.5 hours before the alert went out and 136 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
- 1114 J/kg
- Mixed-layer CIN
- -4 J/kg
- Mixed-layer LCL
- 478 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 69 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 Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 2:25 PM EDT, 2 hours 7 minutes earlier.
Area forecast discussion, Jun 12, 2:25 PM EDT, 2 hours 7 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 225 PM EDT THU JUN 12 1997 TRYING TO RECOVER FM A MAJOR ELECTRICAL/EQUIPMENT FAILURE THAT OCCURED EARLIER THIS MRNG. UNSTBL AMS OVR AREA TDA WITH CAPES NR 2700 J/KG THIS AFTN AND PRECIP WTR UP TO ABT 1.80. LTL CAP OVR FA ENABLED SCT SHRA/TSRA TO DVLP EARLY TDA THRUT CWA. HEAVIEST CONVECTION THIS AFTN BEING FOCUSED ALG E AND W CST SEABREEZES. WK ECSB NOT PROPAGATING VRY FAR INLAND AND EXPECT INCRSD CONVECTION LTR THIS AFTN AS WCSB CONTS TO MV EAST WITH PCPN LIKELY TO LINGER INTO THE EARLY TO MID EVE HRS ERN PTNS CWA. LO LVL FLO TO BCM MR SWLY FRIDAY WITH HINTS OF SLIGHTLY DRIER AIR FILTERING INTO AREA WILL HELP MAX TEMPS TO REBOUND BACK TO MR SEASONAL NEXT 2 DAYS. PRELIM SSI BB 072/087 073/088 03332 JAX BB 071/088 072/090 03342 GNV BB 069/089 072/090 03242 MOBBS
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 4:19 PM EDT | Severe Thunderstorm Warning | JAX | Alachua, Marion | 41 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1997Every severe thunderstorm warning in 1997
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.