Florida, 2001

Flash Flood in Florida, July 21, 2001

July 21, 2001 · NWS JAX · 1 event in 1 county or zone

1 flash flood, as filed by the National Weather Service.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

Open the live radar over this ground

The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What forecasters said that day

The local office's own words before the first event, 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 the first event at Jul 21, 1:55 PM EST, 3 hours 50 minutes earlier.

Area forecast discussion, Jul 21, 1:55 PM EST, 3 hours 50 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE JACKSONVILLE FL
255 PM EDT SAT JUL 21 2001

RADAR SHOWS SCT SHOWERS AND A FEW THUNDERSTORMS OVER GA AREA AND
OVER MARION AND PUTNAM COS ATTM. PRE-FRONTAL TROUGH HAS MOVED
FURTHER S WITH WEAK COLD FRONT OVER SRN GA. BROAD AREA OF LOW PRES
EXTENDS FROM JUST S OF AQQ TO NEAR OCF AND DAB. IN SHORT
TERM...EXPECT SHOWERS AND THUNDERSTORMS TO FILL IN FROM OCF TO JAX
WITH MAINLY SHOWER ACTIVITY DROPPING SWD INTO THE LAKE CITY-LIVE OAK
AREA LATE THIS AFTN/EVENING.

MODELS ARE FAIRLY SIMILAR FOR THIS PACKAGE WITH SOME DIFFERENCE WITH
MOISTURE AND PLACEMENT OF THE SFC LOW OVER N FL AND THE NE GULF OF
MEXICO. INITIALLY IT LOOKS LIKE THE AVN HAS A SLIGHTLY BETTER HANDLE
ON SFC FTRS THAN ETA THEN NGM. SFC TROUGHING MAY DROP A LITTLE
FURTHER S TONIGHT BEFORE STALLING AND WORKING NWD SUN AND MON. THIS
LEAVES THE FL ZONES IN DEEPEST MOISTURE AND LOW LEVEL CONVERGENCE
THRU SUN...WITH BROAD LOW PRES AND TROUGHING LIFTING NWD INTO SRN GA
MON. MID LEVEL TROUGH OVER CENTRAL AND SRN PORTIONS OF FL WILL
RETROGRADE AND BEGIN TO ADVECT DEEP LAYER MOISTURE BACK INTO ALL FL
ZONES AND MOST OF GA ZONES THRU MON.

MARINE...SFC WINDS HAVE COME AROUND TO E TO NE OVER THE COASTAL
WATERS WITH 41008 AND SAUF1 REPORTING NE AROUND 10 KT. NOTED R2
PLATFORM RECENTLY CHECKED IN NE 20 KT AND SEAS NEAR 4.5 FT.
ATTM...APPEARS BEST TO SPLIT GA MARINE AREA FROM FL AREA FOR
DURATION AND STRENGTH OF NE FLOW. NE FLOW DEPICTED BY MOST MODELS
TONIGHT AND STILL PREFER AVN SOLUTION BUT A LITTLE WEAKER.
INITIALLY...MAY NEED SCEC CONDITIONS TONIGHT FOR GA WATERS BUT WILL
MONITOR TRENDS BEFORE MAINTAINING THE HEADLINE.

PRELIM
AMG 70/87/70/88 3335
SSI 74/85/73/86 5556
JAX 72/86/72/86 5656
GNV 71/87/71/88 5757 02

.JAX...
.GA...NONE.
.FL...NONE.

ARS

The radar

The Jacksonville radar (KJAX), 110 km away, was scanning. The volume nearest the first event began at 22:42 UTC.

Open the radar archive at this moment

Event by event

1 flash flood. Local standard time, as filed.

Flash Flood, Alachua

When
July 21, 5:45 PM EST
Where
Alachua County, Countywide
Reported by
NEWSPAPER
Coordinates
29.675, -82.358 (the zone’s center; the record gives no point)

Numerous reports of secondary roads closed. Flooding in parts of University of Florida near Shands.

What these are

Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Florida in 2001Every state in 2001This day in weather historyWarnings in Florida, July 2001

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5257692.