Alert archive / Alabama / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 71, NWS Mobile, AL
NWS Mobile, AL issued this severe thunderstorm warning at Mar 6, 1998, 7:13 PM CST for Clarke County, Alabama. It was in force for 62 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 6, 1998, 7:13 PM CST (01:13 UTC)
- Expired
- Mar 6, 1998, 8:15 PM CST
- In force
- 62 min
- Issued by
- NWS Mobile, AL
- Area
- Whole counties
County Clarke County, AL
The radar
The Mobile radar (KMOB), 118 km from the middle of the area, began a volume at 01:14 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 6, 7:15 PM CST | Hail 0.75 | Morvin, AL | Dime size hail was reported near Morvin. |
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
Birmingham, AL (KBMX), launched 00:00Z, 1.2 hours before the alert went out and 194 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
- 99 J/kg
- Mixed-layer CIN
- -93 J/kg
- Mixed-layer LCL
- 556 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 100 m²/s²
- 0-3 km storm-relative helicity
- 195 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted, in the capitals the NWS used until 2016.
005 WUUS1 KMOB 070112 RRA SVRMOB ALC025-070215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOBILE AL 713 PM CST FRI MAR 6 1998 THE NATIONAL WEATHER SERVICE IN MOBILE AL HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 815 PM CST FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHWESTERN ALABAMA ...CLARKE COUNTY AT 711 PM CST... DOPPLER RADAR AT MOBILE INDICATED A SEVERE THUNDERSTORM 9 MILES NORTHWEST OF WOODS BLUFF MOVING EAST AT 25 MPH. THE FOLLOWING LOCATION IS IN THE PATH OF THIS STORM... WOODS BLUFF,AL BY 720 PM CST CAMPBELL,AL BY 730 PM CST THIS STORM IS VERY CLOSELY BEING MONITORED FOR THE POTENTIAL OF LARGE HAIL PRODUCTION BY YOUR NWS. IF YOU SEE LARGE HAIL RELAY THE REPORT TO LOCAL LAW ENFORCEMENT.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 6:09 PM CST | Severe Thunderstorm Warning | MOB | Choctaw | 61 min |
| Mar 7, 8:20 AM CST | Severe Thunderstorm Warning | MOB | Mobile | 55 min |
| Mar 7, 9:20 AM CST | Severe Thunderstorm Warning | MOB | Baldwin, Mobile | 60 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 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.