Alert archive / Florida / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 90, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 26, 1997, 2:55 PM EDT for Putnam County, Florida. It was in force for 65 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 26, 1997, 2:55 PM EDT (18:55 UTC)
- Expired
- Jun 26, 1997, 4:00 PM EDT
- In force
- 65 min
- Issued by
- NWS Jacksonville, FL
- Area
- Whole counties
County Putnam County, FL
The radar
The Jacksonville radar (KJAX), 97 km from the middle of the area, began a volume at 18:56 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 26, 3:40 PM EDT | Thunderstorm Wind | Grandin, FL | Large trees and power lines were blown down. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
Jacksonville, FL (KNIP), launched 12:00Z, 6.9 hours before the alert went out and 99 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
- 1670 J/kg
- Mixed-layer CIN
- -29 J/kg
- Mixed-layer LCL
- 728 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 6 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 26, 2:50 PM EDT, 5 minutes earlier.
Area forecast discussion, Jun 26, 2:50 PM EDT, 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 250 PM EDT THU JUN 26 1997 ABUNDANT MOISTURE...HI TEMPS...DRY AIR IN MID LVLS RESULTING IN MOD CAPES TO 4000 J/KG AND MOIST FLUX CONV LEADING TO ISOLD HAILERS OVER S PTNS OF CWA. EXPECT THIS TO TRACK SLWLY N-NE INTO FL AND GA CSTS UNTIL SHORTLY AFT SS. TONIGHT..EXPECT TSTM ACTIVITY TO DISSIPATE WITH PATCHY BR AROUND AREA. FRIDAY...EXPECT MORE HEAT AND HUMIDITY WITH FRONTAL BOUNDARY STAYING N OF FA. EXPECT SOME STG/SVR STMS WITH SOME UPR LVL FORCING AND ADDED INSTABILITY FROM FRONTAL BOUNDARY. FRIDAY NIGHT...EXPECT WINDS TO STAY UP SO BR NOT LIKELY. SAT...MORE OF SAME WITH LO FORECAST TO DEVELOP IN S GA PER NGM. SSI TB 075/090/071/088 12464 JAX TB 074/092/073/089 12554 GNV TB 070/094/071/092 12543 LIGHT
In the hours before
Special weather statement, Jun 26, 9:30 AM EDT, 5 hours 25 minutes before
FLZ020>025-030>033-035>038-040-501-GAZ132>136-149>154-162>166- 501-501-261915- HAZADOUS WEATHER OUTLOOK UPDATE FOR NE FLORIDA AND SE GEORGIA NATIONAL WEATHER SERVICE JACKSONVILLE FL 930 AM EDT THU JUN 26 1997 A SOUTHWEST FLOW WILL DEVELOP WITH PLENTY OF SUNSHINE AND MOISTURE TO DESTABILIZE THE ATMOSPHERE. ACROSS SOUTHEAST GEORGIA AND NORTHEAST FLORIDA TODAY A SLIGHT RISK OF PULSE SEVERE WEATHER WILL DEVELOP. A MIDLEVEL DRY INTRUSION WILL INCREASE THE CHANCES OF DOWNBURSTS AND HAIL OVER THE PREVIOUS FEW DAYS. A FEW STORMS MAY REACH SEVERE THUNDERSTORM LIMITS AND PRODUCE DANGEROUS LIGHTNING...HAIL....HEAVY RAIN...AND STRONG DOWNBURST WINDS AS THEY TRACK SLOWLY EASTWARD. THE PRIMARY THREATS WILL BE HAIL AND DOWNBURST WINDS. SKYWARN SPOTTER ACTIVATION MAY BE REQUESTED TODAY PARTICULARLY ALONG THE FLORIDA/GEORGIA BORDER AREA FROM THE SUWANNEE VALLEY EASTWARD TO THE EAST COAST. WELSH
Special weather statement, Jun 26, 9:34 AM EDT, 5 hours 21 minutes before
FLZ020>025-030>033-035>038-040-501-GAZ132>136-149>154-162>166- 501-501-261915- HAZADOUS WEATHER OUTLOOK UPDATE FOR NE FLORIDA AND SE GEORGIA NATIONAL WEATHER SERVICE JACKSONVILLE FL 930 AM EDT THU JUN 26 1997 A SOUTHWEST FLOW WILL DEVELOP WITH PLENTY OF SUNSHINE AND MOISTURE TO DESTABILIZE THE ATMOSPHERE. ACROSS SOUTHEAST GEORGIA AND NORTHEAST FLORIDA TODAY A SLIGHT RISK OF PULSE SEVERE WEATHER WILL DEVELOP. A MIDLEVEL DRY INTRUSION WILL INCREASE THE CHANCES OF DOWNBURSTS AND HAIL OVER THE PREVIOUS FEW DAYS. A FEW STORMS MAY REACH SEVERE THUNDERSTORM LIMITS AND PRODUCE DANGEROUS LIGHTNING...HAIL....HEAVY RAIN...AND STRONG DOWNBURST WINDS AS THEY TRACK SLOWLY EASTWARD. THE PRIMARY THREATSJ WILL BE HAIL AND DOWNBURST WINDS. SKYWARN SPOTTER ACTIVATION MAY BE REQUESTED TODAY PARTICULARLY ALONG THE FLORIDA/GEORGIA BORDER AREA FROM THE SUWANNEE VALLEY EASTWARD TO THE EAST COAST. WELSH
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 2:15 PM EDT | Severe Thunderstorm Warning | JAX | Alachua, Marion | 60 min |
| Jun 26, 3:05 PM EDT | Severe Thunderstorm Warning | JAX | Saint Johns | 55 min |
| Jun 26, 3:13 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 62 min |
| Jun 26, 3:34 PM EDT | Severe Thunderstorm Warning | JAX | Clay | 56 min |
| Jun 26, 3:43 PM EDT | Flash Flood Warning | JAX | Marion | 3 hr |
| Jun 26, 3:54 PM EDT | Severe Thunderstorm Warning | JAX | Flagler | 51 min |
| Jun 26, 4:04 PM EDT | Severe Thunderstorm Warning | JAX | Gilchrist | 56 min |
| Jun 26, 4:30 PM EDT | Severe Thunderstorm Warning | JAX | Suwannee | 60 min |
| Jun 26, 5:28 PM EDT | Severe Thunderstorm Warning | JAX | Glynn | 62 min |
| Jun 26, 5:39 PM EDT | Severe Thunderstorm Warning | JAX | Camden | 66 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.