Alert archive / Florida / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 79, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 8, 1998, 4:44 AM CST for Santa Rosa County, Florida. It was in force for 36 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
- Mar 8, 1998, 4:44 AM CST (10:44 UTC)
- Expired
- Mar 8, 1998, 5:20 AM CST
- In force
- 36 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Santa Rosa County, FL
The radar
The Eglin Afb radar (KEVX), 106 km from the middle of the area, began a volume at 10:46 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 |
|---|---|---|---|
| Mar 8, 4:50 AM CST | Hail 0.75 | Milton, FL | Dime size hail was reported just northwest of Milton. |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Mar 8, 4:00 AM CST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.7 hours before the alert went out and 262 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
- 65 J/kg
- Mixed-layer CIN
- -254 J/kg
- Mixed-layer LCL
- 520 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- 530 m²/s²
- 0-3 km storm-relative helicity
- 619 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.3
The text
As transmitted, in the capitals the NWS used until 2016.
259 WUUS1 KMOB 081046 RRA SVRMOB FLC113-081120- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 444 AM CST SUN MAR 8 1998 THE NATIONAL WEATHER SERVICE IN MOBILE AL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 520 AM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN NORTHWESTERN FLORIDA ...SANTA ROSA COUNTY AT 443 AM CST... DOPPLER RADAR AT MOBILE INDICATED A SEVERE THUNDERSTORM 2 MILES SOUTH OF PACE MOVING NORTHEAST AT 50 MPH. SOME LOCATIONS AFFECTED BY THIS STORM ARE... AVALON BEACH AT 444 AM CST PACE AT 444 AM CST MILTON AT 450 AM CST MILTON (NEAR WHITING FIELD) AT 455 AM CST ALLENTOWN AT 455 AM CST THE MAIN THREAT FROM THIS STORM WILL BE LARGE HAIL. A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER... SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 8, 3:50 AM CST | Flash Flood Warning | MOB | Escambia | 2 hr |
| Mar 8, 4:32 AM CST | Severe Thunderstorm Warning | MOB | Escambia | 33 min |
| Mar 8, 5:58 AM CST | Flash Flood Warning | MOB | Escambia | 4 hr |
| Mar 8, 10:14 AM CST | Flash Flood Warning | MOB | Okaloosa, Santa Rosa | 5 hr |
| Mar 8, 10:14 AM CST | Flash Flood Warning | MOB | Escambia | 5 hr |
| Mar 8, 2:08 PM CST | Severe Thunderstorm Warning | MOB | Escambia, Santa Rosa | 62 min |
| Mar 8, 2:47 PM CST | Severe Thunderstorm Warning | MOB | Okaloosa | 63 min |
| Mar 8, 3:30 PM CST | Flash Flood Warning | MOB | Escambia, Santa Rosa | 6 hr |
| Mar 8, 3:30 PM CST | Flash Flood Warning | MOB | Okaloosa | 6 hr |
Nearby
Severe Thunderstorm Warnings in Florida, 1998Every severe thunderstorm warning in 1998
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.