Alert archive / Maryland / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 139, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Nov 25, 2001, 3:35 PM EST for Montgomery County, Maryland. It was in force for 25 min. 4 reports 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
- Nov 25, 2001, 3:35 PM EST (20:35 UTC)
- Expired
- Nov 25, 2001, 4:00 PM EST
- In force
- 25 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties
County Montgomery County, MD
The radar
The Sterling radar (KLWX), 30 km from the middle of the area, began a volume at 20:35 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 |
|---|---|---|---|
| Nov 25, 3:35 PM EST | Hail 0.75 | Germantown, MD | Dime sized hail fell. |
| Nov 25, 3:37 PM EST | Hail 0.88 | Gaithersburg, MD | Pea to nickel sized hail was reported. |
| Nov 25, 3:45 PM EST | Hail 0.9 | Montgomery Vlg, MD | Robin egg sized hail fell. |
| Nov 25, 3:50 PM EST | Hail 1.75 | Brookeville, MD | Golfball sized hail fell. |
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 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 Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Nov 25, 12:58 PM EST, 2 hours 37 minutes earlier.
Area forecast discussion, Nov 25, 12:58 PM EST, 2 hours 37 minutes before
AREA FORECAST DISCUSSION...UPDATED NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 1258 PM EST SUN NOV 25 2001 NEEDED TO ISSUE QUIK UPDT FOR TSTMS THAT HV FIRED UP NR HIGHLND CO VA IN AREA OF STRNG H8-5 LAPSE RATES...MINIMAL INSTAB /LI NEAR 0/... SFC CNVGC...AND H5 S/WV. ZNS W/ OF BLURDG RCVD CHC TSRA WRDG. ALL PRODUCTS OUT. REG SKED PRODUCTS NXT CPL HRS. .LWX...SMALL CRAFT ADVISORY ON SOUTHERN MARYLAND CHESAPEAKE BAY. HTS
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 25, 4:15 PM EST | Special Marine Warning | LWX | 90 min | |
| Nov 25, 3:55 PM EST | Severe Thunderstorm Warning | LWX | Howard | 35 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2001Every severe thunderstorm warning in 2001
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; radar from the NEXRAD Level II archive.